Cac Phuong Phap Giai Toan Hoa

G v :L Vn Hunh Trng THPT Giao Thu BPHN LOI CC DNG CU HI TRONG THI HC 2007 2008 2009 - Kl tc dng dung dch mui. Cu 1. Cho hn hp bt Al, Fe vo dung dch cha Cu(NO3)2 v AgNO3. Sau khi cc phn ng xy ra hon ton, thu c hn hp rn gm ba kim loi l: A. Al, Fe, Cu. B. Al, Fe, Ag. C. Al, Cu, Ag. D. Fe, Cu, Ag. Cu 2. Cho hn hp gm Fe v Zn vo dung dch AgNO3 n khi cc phn ng xy ra hon ton, thu c dung dch X gm hai mui v cht rn Y gm hai kim loi. Hai mui trong X l A. AgNO3 v Zn(NO3)2. B. Fe(NO3)3 v Zn(NO3)2. C. Fe(NO3)2 v AgNO3. D. Zn(NO3)2 v Fe(NO3)2. Cu 3. Cho hn hp bt gm 2,7 gam Al v 5,6 gam Fe vo 550 ml dung dch AgNO3 1M. Sau khi cc phn ng xy ra hon ton, thu c m gam cht rn. Gi tr ca m l (bit th t trong dy th in ho: Fe3+/Fe2+ ng trc Ag+/Ag). A. 54,0. B. 59,4. C. 64,8. D. 32,4. Cu 4. Cho m1 gam Al vo 100 ml dung dch gm Cu(NO3)2 0,3M v AgNO3 0,3M. Sau khi cc phn ng xy ra hon ton th thu c m2 gam cht rn X. Nu cho m2 gam X tc dng vi lng d dung dch HCl th thu c 0,336 lt kh ( ktc). Gi tr ca m1 v m2 ln lt l A. 1,08 v 5,43. B. 0,54 v 5,16. C. 1,08 v 5,16. D. 8,10 v 5,43. Cu 5. Tin hnh hai th nghim sau: - Th nghim 1: Cho m gam bt Fe (d) vo V1 lt dung dch Cu(NO3)2 1M;. - Th nghim 2: Cho m gam bt Fe (d) vo V2 lt dung dch AgNO3 0,1M. Sau khi cc phn ng xy ra hon ton, khi lng cht rn thu c hai th nghim u bng nhau. Gi tr ca V1 so vi V2 l A. V1 = V2. B. V1 = 2 V2. C. V1 = 5V2. D. V1 = 10 V2. Cu 6. Cho mt lng bt Zn vo dung dch X gm FeCl2 v CuCl2. Khi lng cht rn sau khi cc phn ng xy ra hon ton nh hn khi lng bt Zn ban u l 0,5 gam. C cn phn dung dch sau phn ng thu c 13,6 gam mui khan. Tng khi lng cc mui trong X l A. 14,1 gam. B. 13,1 gam. C. 17,0 gam. D. 19,5 gam. Cu 7. Cho hn hp gm 1,2 mol Mg v x mol Zn vo dung dch cha 2 mol Cu2+ v 1 mol Ag+ n khi cc phn ng xy ra hon ton, thu c mt dung dch cha ba ion kim loi. Trong cc gi tr sau y, gi tr no ca x tho mn trng hp trn? A. 1,8. B. 1,2. C. 2,0. D. 1,5. Cu 8. Cho m gam hn hp bt Zn v Fe vo lng d dung dch CuSO4. Sau khi kt thc cc phn ng, lc b phn dung dch thu c m gam bt rn. Thnh phn phn trm theo khi lng ca Zn trong hn hp bt ban u l A. 90,27%. B. 82,20%. C. 12,67%. D. 85,30%. Cu 9. Nhng mt thanh st nng 100 gam vo 100 ml dung dch hn hp gm Cu(NO3)2 0,2M v AgNO3 0,2M. Sau mt thi gian ly thanh kim loi ra, ra sch lm kh cn c 101,72 gam (gi thit cc kim loi to thnh u bm ht vo thanh st). Khi lng st phn ng l A. 2,16 gam. B. 1,72 gam. C. 1,40 gam. D. 0,84 gam. Cu 10. Nhng mt l kim loi M (ch c ho tr hai trong hp cht) c khi lng 50 gam vo 200 ml dung dch AgNO3 1M cho n khi phn ng xy ra hon ton. Lc dung dch, em c cn thu c 18,8 gam mui khan. Kim loi M l A. Zn. B. Mg. C. Fe. D. Cu. - Kl tc dng vi phi kim. Cu 11. Ho tan hon ton 2,81 gam hn hp gm Fe2O3, MgO, ZnO trong 500 ml axit H2SO4 0,1M (va ). Sau phn ng, hn hp mui sunfat khan thu c khi c cn dung dch c khi lng l A. 3,81 gam. B. 4,81 gam. C. 5,81 gam. D. 6,81 gam. Cu 12. Cho 2,13 gam hn hp X gm ba kim loi Mg, Cu v Al dng bt tc dng hon ton vi oxi thu c hn hp Y gm cc oxit c khi lng 3,33 gam. Th tch dung dch HCl 2M va phn ng ht vi Y l A. 75 ml. B. 57 ml. C. 50 ml. D. 90 ml. Cu 13. Nung nng 16,8 gam hn hp gm Au, Ag, Cu, Fe, Zn vi mt lng d kh O2, n khi cc phn ng xy ra hon ton, thu c 23,2 gam cht rn X. Th tch dung dch HCl 2M va phn ng vi cht rn X l A. 200 ml. B. 400 ml. C. 600 ml. D. 800 ml. Cu 14. ho tan hon ton 2,32 gam hn hp gm FeO, Fe3O4 v Fe2O3 (trong s mol FeO bng s mol Fe2O3), cn dng va V lt dung dch HCl 1M. Gi tr ca V l A. 0,23. B. 0,18. C. 0,08. D. 0,16. Cu 15. Cho 9,12 gam hn hp gm FeO, Fe2O3, Fe3O4 tc dng vi dung dch HCl (d). Sau khi cc phn ng xy ra hon ton, c dung dch Y; c cn Y thu c 7,62 gam FeCl2 v m gam FeCl3. Gi tr ca m l A. 9,75. B. 8,75. C. 6,50. D. 7,80. Cu 16. Cho 11,36 gam hn hp gm Fe, FeO, Fe2O3, Fe3O4 phn ng ht vi dung dch HNO3 long (d), thu c 1,344 lt kh NO (sn phm kh duy nht, ktc) v dung dch X. C cn dung dch X thu c m gam mui khan. Gi tr ca m l A. 35,50. B. 38,72. C. 49,09. D. 34,36. Cu 17. t chy hon ton 7,2 gam kim loi M (c ho tr hai khng i trong hp cht) trong hn hp kh Cl2 v O2. Sau phn ng thu c 23,0 gam cht rn v th tch hn hp kh phn ng l 5,6 lt ( ktc). Kim loi M l A. Be. B. Cu. C. Ca. D. Mg. Cu 18. Trn 5,6 gam bt st vi 2,4 gam bt lu hunh ri nung nng (trong iu kin khng c khng kh), thu c hn hp rn M. Cho M tc dng vi lng d dung dch HCl, gii phng hn hp kh X v cn li mt phn khng tan G. t chy hon ton X v G cn va V lt kh O2 (ktc). Gi tr ca V l A. 4,48. B. 2,80. C. 3,08. D. 3,36. - Phn ng nhit luyn. Cu 19. Cho lung kh H2 (d) qua hn hp cc oxit CuO, Fe2O3, ZnO, MgO nung nhit cao. Sau phn ng hn hp rn cn li l:

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G v :L Vn Hunh Trng THPT Giao Thu BA. Cu, Fe, ZnO, MgO. B. Cu, Fe, Zn, MgO. C. Cu, Fe, Zn, Mg. D. Cu, FeO, ZnO, MgO. Cu 20. Cho kh CO (d) i vo ng s nung nng ng hn hp X gm Al2O3, MgO, Fe3O4, CuO thu c cht rn Y. Cho Y vo dung dch NaOH (d), khuy k, thy cn li phn khng tan Z. Gi s cc phn ng xy ra hon ton. Phn khng tan Z gm. A. MgO, Fe3O4, Cu. B. MgO, Fe, Cu. C. Mg, Fe, Cu. D. Mg, Al, Fe, Cu. Cu 21. Dn t t V lt kh CO ( ktc) i qua mt ng s ng lng d hn hp rn gm CuO, Fe2O3 ( nhit cao). Sau khi cc phn ng xy ra hon ton, thu c kh X. Dn ton b kh X trn vo lng d dung dch Ca(OH)2 th to thnh 4 gam kt ta. Gi tr ca V l A. 0,896. B. 1,120. C. 0,224. D. 0,448. Cu 22. Cho V lt hn hp kh ( ktc) gm CO v H2 phn ng vi mt lng d hn hp rn gm CuO v Fe3O4 nung nng. Sau khi cc phn ng xy ra hon ton, khi lng hn hp rn gim 0,32 gam. Gi tr ca V l A. 0,224. B. 0,560. C. 0,112. D. 0,448. Cu 23. Cho lung kh CO (d) i qua 9,1 gam hn hp gm CuO v Al2O3 nung nng n khi phn ng hon ton, thu c 8,3 gam cht rn. Khi lng CuO c trong hn hp ban u l A. 0,8 gam. B. 8,3 gam. C. 4,0 gam. D. 2,0 gam. Cu 24. Cho 4,48 lt kh CO ( ktc) t t i qua ng s nung nng ng 8 gam mt oxit st n khi phn ng xy ra hon ton. Kh thu c sau phn ng c t khi so vi hiro bng 20. Cng thc ca oxit st v phn trm th tch ca kh CO2 trong hn hp kh sau phn ng. A. Fe2O3; 65%. B. Fe3O4; 75%. C. FeO; 75%. D. Fe2O3; 75%. Kim loi kim, kim loi kim th, nhm, st: 5. iu ch, tinh ch. Cu 25. Trong cng nghip, natri hiroxit c sn xut bng phng php. A. in phn dung dch NaCl, c mng ngn in cc. B. in phn dung dch NaNO3, khng c mng ngn in cc. C. in phn NaCl nng chy. D. in phn dung dch NaCl, khng c mng ngn in cc. Cu 26. Thc hin cc th nghim sau: (I) Cho dung dch NaCl vo dung dch KOH. (II) Cho dung dch Na2CO3 vo dung dch Ca(OH)2. (III) in phn dung dch NaCl vi in cc tr, c mng ngn. (IV) Cho Cu(OH)2 vo dung dch NaNO3. (V) Sc kh NH3 vo dung dch Na2CO3. (VI) Cho dung dch Na2SO4 vo dung dch Ba(OH)2. Cc th nghim u iu ch c NaOH l: A. II, V v VI. B. I, II v III. C. II, III v VI. D. I, IV v V. Cu 27. Phn ng ho hc xy ra trong trng hp no di y khng thuc loi phn ng nhit nhm? A. Al tc dng vi Fe2O3 nung nng. B. Al tc dng vi CuO nung nng. C. Al tc dng vi Fe3O4 nung nng. D. Al tc dng vi axit H2SO4 c, nng. Cu 28. thu c Al2O3 t hn hp Al2O3 v Fe2O3, ngi ta ln lt: A. dng dung dch NaOH (d), dung dch HCl (d), ri nung nng. B. dng dung dch NaOH (d), kh CO2 (d), ri nung nng. C. dng kh H2 nhit cao, dung dch NaOH (d). D. dng kh CO nhit cao, dung dch HCl (d). Cu 29. Nguyn tc luyn thp t gang l: A. Tng thm hm lng cacbon trong gang thu c thp. B. Dng cht kh CO kh oxit st thnh st nhit cao. C. Dng CaO hoc CaCO3 kh tp cht Si, P, S, Mn, trong gang thu c thp. D. Dng O2 oxi ho cc tp cht Si, P, S, Mn, trong gang thu c thp. - Tc ha hc, s phn ng. Cu 30. Cho dy cc cht: NH4Cl, (NH4)2SO4, NaCl, MgCl2, FeCl2, AlCl3. S cht trong dy tc dng vi lng d dung dch Ba(OH)2 to thnh kt ta l A. 3. B. 5. C. 4. D. 1. Cu 31. Cho s phn ng: NaCl (X) NaHCO3 (Y) NaNO3. X v Y c th l A. NaOH v NaClO. B. NaClO3 v Na2CO3.C. NaOH v Na2CO3. D. Na2CO3 v NaClO. Cu 32. T hai mui X v Y thc hin cc phn ng sau: Xt X1 + CO2 o

+ H2O X2. + 2Y X + Y2 + 2H2O. D. BaCO3, Na2CO3 .

X2 + Y X + Y1 + H2O Hai mui X, Y tng ng l A. CaCO3, NaHCO3. B. MgCO3, NaHCO3. Nc cng. Cu 33. Mt mu nc cng cha cc ion: Ca2+, Mg2+,

C. CaCO3, NaHSO4.

HCO3 , Cl-, SO 2- . Cht c dng lm mm mu nc cng trn l 4

A. H2SO4. B. NaHCO3. C. HCl. Cu 34. Hai cht c dng lm mm nc cng vnh cu l

D. Na2CO3.

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G v :L Vn Hunh Trng THPT Giao Thu BA. Na2CO3 v HCl. B. NaCl v Ca(OH)2. C. Na2CO3 v Ca(OH)2. D. Na2CO3 v Na3PO4. - Kl tc dng vi nc, axit, baz, mui. Cu 35. Cho mt mu hp kim Na-Ba tc dng vi nc (d), thu c dung dch X v 3,36 lt H2 (ktc). Th tch dung dch axit H2SO4 2M cn dng trung ho dung dch X l A. 30ml. B. 60ml. C. 75ml. D. 150ml. Cu 36. Khi cho 100ml dung dch KOH 1M vo 100ml dung dch HCl thu c dung dch c cha 6,525 gam cht tan. Nng mol (hoc mol/l) ca HCl trong dung dch dng l A. 0,5M. B. 1M. C. 0,75M. D. 0,25M. Cu 37. Chia m gam Al thnh hai phn bng nhau: - Phn mt tc dng vi lng d dung dch NaOH, sinh ra x mol kh H2;. - Phn hai tc dng vi lng d dung dch HNO3 long, sinh ra y mol kh N2O (sn phm kh duy nht). Quan h gia x v y l A. x = 4y. B. x = y. C. x = 2y. D. y = 2x. Cu 38. Cho hn hp gm Na v Al c t l s mol tng ng l 1 : 2 vo nc (d). Sau khi cc phn ng xy ra hon ton, thu c 8,96 lt kh H2 ( ktc) v m gam cht rn khng tan. Gi tr ca m l A. 5,4. B. 43,2. C. 7,8. D. 10,8. Cu 39. Hn hp X gm Na v Al. Cho m gam X vo mt lng d nc th thot ra V lt kh. Nu cng cho m gam X vo dung dch NaOH (d) th c 1,75V lt kh. Thnh phn phn trm theo khi lng ca Na trong X l (bit cc th tch kh o trong cng iu kin). A. 29,87%. B. 39,87%. C. 77,31%. D. 49,87%. Cu 40. Ho tan hon ton 2,9 gam hn hp gm kim loi M v oxit ca n vo nc, thu c 500 ml dung dch cha mt cht tan c nng 0,04M v 0,224 lt kh H2 ( ktc). Kim loi M l A. Ba. B. Na. C. Ca. D. K. Cu 41. Ho tan hon ton 0,3 mol hn hp gm Al v Al4C3 vo dung dch KOH (d), thu c a mol hn hp kh v dung dch X. Sc kh CO2 (d) vo dung dch X, lng kt ta thu c l 46,8 gam. Gi tr ca a l A. 0,40. B. 0,45. C. 0,60. D. 0,55. - CO2, SO2, P2O5 td dung dch kim. Cu 42. Nung 13,4 gam hn hp 2 mui cacbonat ca 2 kim loi ha tr 2, thu c 6,8 gam cht rn v kh X. Lng kh X sinh ra cho hp th vo 75 ml dung dch NaOH 1M, khi lng mui khan thu c sau phn ng l A. 6,5 gam. B. 5,8 gam. C. 6,3 gam. D. 4,2 gam. Cu 43. Hp th hon ton 4,48 lt kh CO2 (ktc) vo 500 ml dung dch hn hp gm NaOH 0,1M v Ba(OH)2 0,2M, sinh ra m gam kt ta. Gi tr ca m l A. 11,82. B. 19,70. C. 9,85. D. 17,73. Cu 44. Cho 0,448 lt kh CO2 ( ktc) hp th ht vo 100 ml dung dch cha hn hp NaOH 0,06M v Ba(OH)2 0,12M, thu c m gam kt ta. Gi tr ca m l A. 1,182. B. 2,364. C. 3,940. D. 1,970. Cu 45. Hp th hon ton 2,688 lt kh CO2(ktc) vo 2,5 lt dung dch Ba(OH)2 nng a mol/l, thu c 15,76 gam kt ta. Gi tr ca a l A. 0,048. B. 0,06. C. 0,04. D. 0,032. Cu 46. Cho 100 ml dung dch KOH 1,5M vo 200 ml dung dch H3PO4 0,5M, thu c dung dch X. C cn dung dch X, thu c hn hp gm cc cht l A. KH2PO4 v K3PO4. B. KH2PO4 v H3PO4. C. KH2PO4 v K2HPO4. D. K3PO4 v KOH. Cu 47. Cho 0,1 mol P2O5 vo dung dch cha 0,35 mol KOH. Dung dch thu c c cc cht: A. K3PO4, K2HPO4. B. K2HPO4, KH2PO4. C. H3PO4, KH2PO4. D. K3PO4, KOH. 2CO3 tc dng H+.

Cu 48. Cho t t dung dch cha a mol HCl vo dung dch cha b mol Na2CO3 ng thi khuy u, thu c V lt kh ( ktc) v dung dch X. Khi cho d nc vi trong vo dung dch X thy c xut hin kt ta. Biu thc lin h gia V vi a, b l: A. V = 11,2(a - b). B. V = 22,4(a - b). C. V = 22,4(a + b). D. V = 11,2(a + b). Cu 49. Dung dch X cha hn hp gm Na2CO3 1,5M v KHCO3 1M. Nh t t tng git cho n ht 200 ml dung dch HCl 1M vo 100 ml dung dch X, sinh ra V lt kh ( ktc). Gi tr ca V l A. 3,36. B. 2,24. C. 4,48. D. 1,12. Cu 50. Cho 1,9 gam hn hp mui cacbonat v hirocacbonat ca kim loi kim M tc dng ht vi dung dch HCl (d), sinh ra 0,448 lt kh ( ktc). Kim loi M l A. Li. B. Rb. C. Na. D. K. Cu 51. Nhit phn hon ton 40 gam mt loi qung lmit c ln tp cht tr sinh ra 8,96 lt kh CO2(ktc). Thnh phn phn trm v khi lng ca CaCO3.MgCO3 trong loi qung nu trn l A. 84%. B. 50%. C. 92%. D. 40%. - Tnh lng tnh ca Al(OH)3, Zn(OH)2. Cu 52. Nh t t cho n d dung dch NaOH vo dung dch AlCl3. Hin tng xy ra l A. ch c kt ta keo trng. B. c kt ta keo trng, sau kt ta tan. C. khng c kt ta, c kh bay ln. D. c kt ta keo trng v c kh bay ln.

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G v :L Vn Hunh Trng THPT Giao Thu BCu 53. Nh t t 0,25 lt dung dch NaOH 1,04M vo dung dch gm 0,024 mol FeCl3; 0,016 mol Al2(SO4)3 v 0,04 mol H2SO4 thu c m gam kt ta. Gi tr ca m l A. 1,560. B. 5,064. C. 4,128. D. 2,568. Cu 54. Ho tan hon ton 47,4 gam phn chua KAl(SO4)2.12H2O vo nc, thu c dung dch X. Cho ton b X tc dng vi 200 ml dung dch Ba(OH)2 1M, sau phn ng thu c m gam kt ta. Gi tr ca m l A. 54,4. B. 62,2. C. 7,8. D. 46,6. Cu 55. Trn dung dch cha a mol AlCl3 vi dung dch cha b mol NaOH. thu c kt ta th cn c t l. A. a : b > 1 : 4. B. a : b < 1 : 4. C. a : b = 1 : 4. D. a : b = 1 : 5. Cu 56. Cho 200 ml dung dch AlCl3 1,5M tc dng vi V lt dung dch NaOH 0,5M, lng kt ta thu c l 15,6 gam. Gi tr ln nht ca V l A. 2. B. 1,2. C. 1,8. D. 2,4. Cu 57. Cho V lt dung dch NaOH 2M vo dung dch cha 0,1 mol Al2(SO4)3 v 0,1 mol H2SO4 n khi phn ng hon ton, thu c 7,8 gam kt ta. Gi tr ln nht ca V thu c lng kt ta trn l A. 0,35. B. 0,45. C. 0,25. D. 0,05. Cu 58. Thm m gam kali vo 300ml dung dch cha Ba(OH)2 0,1M v NaOH 0,1M thu c dung dch X. Cho t t dung dch X vo 200ml dung dch Al2(SO4)3 0,1M thu c kt ta Y. thu c lng kt ta Y ln nht th gi tr ca m l A. 1,95. B. 1,71. C. 1,59. D. 1,17. Cu 59. Ho tan ht m gam ZnSO4 vo nc c dung dch X. Cho 110 ml dung dch KOH 2M vo X, thu c a gam kt ta. Mt khc, nu cho 140 ml dung dch KOH 2M vo X th cng thu c a gam kt ta. Gi tr ca m l A. 12,375. B. 22,540. C. 20,125. D. 17,710. Cu 60. Ho tan hon ton m gam hn hp X gm Na2O v Al2O3 vo H2O thu c 200 ml dung dch Y ch cha cht tan duy nht c nng 0,5M. Thi kh CO2 (d) vo Y thu c a gam kt ta. Gi tr ca m v a ln lt l A. 8,2 v 7,8. B. 13,3 v 3,9. C. 8,3 v 7,2. D. 11,3 v 7,8. - Phn ng nhit nhm. Cu 61. iu ch c 78 gam Cr t Cr2O3 (d) bng phng php nhit nhm vi hiu sut ca phn ng l 90% th khi lng bt nhm cn dng ti thiu l A. 40,5 gam. B. 45,0 gam. C. 54,0 gam. D. 81,0 gam. Cu 62. Nung hn hp bt gm 15,2 gam Cr2O3 v m gam Al nhit cao. Sau khi phn ng hon ton, thu c 23,3 gam hn hp rn X. Cho ton b hn hp X phn ng vi axit HCl (d) thot ra V lt kh H2 (ktc). Gi tr ca V l A. 10,08. B. 3,36. C. 4,48. D. 7,84. Cu 63. Khi cho 41,4 gam hn hp X gm Fe2O3, Cr2O3 v Al2O3 tc dng vi dung dch NaOH c (d), sau phn ng thu c cht rn c khi lng 16 gam. kh hon ton 41,4 gam X bng phn ng nhit nhm, phi dng 10,8 gam Al. Thnh phn phn trm theo khi lng ca Cr2O3 trong hn hp X l A. 50,67%. B. 20,33%. C. 66,67%. D. 36,71%. Cu 64. Nung nng m gam hn hp Al v Fe2O3 (trong mi trng khng c khng kh) n khi phn ng xy ra hon ton, thu c hn hp rn Y. Chia Y thnh hai phn bng nhau: - Phn 1 tc dng vi dung dch H2SO4 long (d), sinh ra 3,08 lt kh H2 (ktc);. - Phn 2 tc dng vi dung dch NaOH (d), sinh ra 0,84 lt kh H2 (ktc). Gi tr ca m l A. 29,43. B. 22,75. C. 29,40. D. 21,40. Cu 65. Nung nng m gam hn hp gm Al v Fe3O4 trong iu kin khng c khng kh. Sau khi phn ng xy ra hon ton, thu c hn hp rn X. Cho X tc dng vi dung dch NaOH (d) thu c dung dch Y, cht rn Z v 3,36 lt kh H2 ( ktc). Sc kh CO2 (d) vo dung dch Y, thu c 39 gam kt ta. Gi tr ca m l A. 45,6. B. 36,7. C. 48,3. D. 36,7. Cu 66. t nng mt hn hp gm Al v 16 gam Fe2O3 (trong iu kin khng c khng kh) n khi phn ng xy ra hon ton, thu c hn hp rn X. Cho X tc dng va vi V ml dung dch NaOH 1M sinh ra 3,36 lt H2 (ktc). Gi tr ca V l A. 150. B. 300. C. 100. D. 200. - Fe p dng cng thc kinh nghim.- Fe, Cu tc dng HNO3, H2SO4 c. Cu 67. Nung m gam bt st trong oxi, thu c 3 gam hn hp cht rn X. Ha tan ht hn hp X trong dung dch HNO3(d), thot ra 0,56 lt (ktc) NO (l sn phm kh duy nht). Gi tr ca m l A. 2,32. B. 2,22. C. 2,62. D. 2,52. Cu 68. Cho 11,36 gam hn hp gm Fe, FeO, Fe2O3 v Fe3O4 phn ng ht vi dung dch HNO3 long (d), thu c 1,344 lt kh NO (sn phm kh duy nht, ktc) v dung dch X. C cn dung dch X thu c m gam mui khan. Gi tr ca m l A. 35,50. B. 34,36. C. 38,72. D. 49,09. Cu 69. Cho hn hp Fe, Cu phn ng vi dung dch HNO3 long. Sau khi phn ng hon ton, thu c dung dch ch cha mt cht tan v kim loi d. Cht tan l A. Fe(NO3)3. B. Fe(NO3)2. C. Cu(NO3)2. D. HNO3. Cu 70. Cho hn hp X gm Mg v Fe vo dung dch axit H2SO4 c, nng n khi cc phn ng xy ra hon ton, thu c dung dch Y v mt phn Fe khng tan. Cht tan c trong dung dch Y l A. MgSO4 v FeSO4. B. MgSO4 v Fe2(SO4)3. C. MgSO4, Fe2(SO4)3 v FeSO4. D. MgSO4. Cu 71. Cho 6,72 gam Fe vo dung dch cha 0,3 mol H2SO4 c, nng (gi thit SO2 l sn phm kh duy nht). Sau khi phn ng xy ra hon ton, thu c. A. 0,03 mol Fe2(SO4)3 v 0,06 mol FeSO4. B. 0,05 mol Fe2(SO4)3 v 0,02 mol Fe d. C. 0,02 mol Fe2(SO4)3 v 0,08 mol FeSO4. D. 0,12 mol FeSO4.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 72. Th tch dung dch HNO3 1M (long) t nht cn dng ho tan hon ton mt hn hp gm 0,15 mol Fe v 0,15 mol Cu l (bit phn ng to cht kh duy nht l NO). A. 0,6 lt. B. 1,0 lt. C. 1,2 lt. D. 0,8 lt. Cu 73. Ha tan hon ton 12 gam hn hp Fe, Cu (t l mol 1:1) bng axit HNO3, thu c V lt (ktc) hn hp kh X (gm NO v NO2) v dung dch Y (ch cha hai mui v axit d). T khi ca X i vi H2 bng 19. Gi tr ca V l A. 2,24. B. 3,36. C. 5,60. D. 4,48. Cu 74. Cho 6,72 gam Fe vo 400 ml dung dch HNO3 1M, n khi phn ng xy ra hon ton, thu c kh NO (sn phm kh duy nht) v dung dch X. Dung dch X c th ho tan ti a m gam Cu. Gi tr ca m l A. 3,84. B. 3,20. C. 1,92. D. 0,64. Cu 75. Cho 61,2 gam hn hp X gm Cu v Fe3O4 tc dng vi dung dch HNO3 long, un nng v khuy u. Sau khi cc phn ng xy ra hon ton, thu c 3,36 lt kh NO (sn phm kh duy nht, ktc), dung dch Y v cn li 2,4 gam kim loi. C cn dung dch Y, thu c m gam mui khan. Gi tr ca m l A. 97,5. B. 137,1. C. 108,9. D. 151,5. - Hp cht ca Fe. Cu 76. Trong cc loi qung st, qung c hm lng st cao nht l A. hematit nu. B. hematit . C. xierit. D. manhetit. Cu 77. Khi nung hn hp cc cht Fe(NO3)2, Fe(OH)3 v FeCO3 trong khng kh n khi lng khng i, thu c mt cht rn l A. Fe2O3. B. Fe. C. FeO. D. Fe3O4. Cu 78. Ha tan hon ton Fe3O4 trong dung dch H2SO4 long (d) c dung dch X1. Cho lng d bt Fe vo dung dch X1 (trong iu kin khng c khng kh) n khi phn ng xy ra hon ton, thu c dung dch X2 cha cht tan l A. FeSO4. B. Fe2(SO4)3 v H2SO4. C. FeSO4 v H2SO4. D. Fe2(SO4)3. Cu 79. Cho dy cc cht: FeO, Fe(OH)2, FeSO4, Fe3O4, Fe2(SO4)3, Fe2O3. S cht trong dy b oxi ha khi tc dng vi dung dch HNO3 c, nng l A. 4. B. 5. C. 6. D. 3. Cu 80. Trong cc cht: FeCl2, FeCl3, Fe(NO3)2, Fe(NO3)3, FeSO4, Fe2(SO4)3. S cht c c tnh oxi ho v tnh kh l A. 4. B. 5. C. 2. D. 3. Cu 81. Cho tng cht: Fe, FeO, Fe(OH)2, Fe(OH)3, Fe3O4, Fe2O3, Fe(NO3)2, Fe(NO3)3, FeSO4, Fe2(SO4)3 , FeCO3 ln lt phn ng vi HNO3 c, nng. S phn ng thuc loi phn ng oxi ho - kh l A. 6. B. 7. C. 8. D. 5. Cu 82. Ho tan 5,6 gam Fe bng dung dch H2SO4 long (d), thu c dung dch X. Dung dch X phn ng va vi V ml dung dch KMnO4 0,5M. Gi tr ca V l A. 80. B. 20. C. 40. D. 60. Cu 83. ho tan hon ton 2,32 gam hn hp gm FeO, Fe3O4 v Fe2O3 (trong s mol FeO bng s mol Fe2O3), cn dng va V lt dung dch HCl 1M. Gi tr ca V l A. 0,16. B. 0,23. C. 0,08. D. 0,18. Cu 84. Cho 9,12 gam hn hp gm FeO, Fe3O4 v Fe2O3 tc dng vi dung dch HCl (d). Sau khi cc phn ng xy ra hon ton, c dung dch Y; c cn Y thu c 7,62 gam FeCl2 v m gam FeCl3. Gi tr ca m l A. 7,80. B. 8,75. C. 6,50. D. 9,75. Cu 85. Cho m gam hn hp X gm FeO, Fe2O3, Fe3O4 vo mt lng va dung dch HCl 2M, thu c dung dch Y c t l s mol Fe2+ v Fe3+ l 1 : 2. Chia Y thnh hai phn bng nhau. C cn phn mt thu c m1 gam mui khan. Sc kh clo (d) vo phn hai, c cn dung dch sau phn ng thu c m2 gam mui khan. Bit m2 - m1 = 0,71. Th tch dung dch HCl dng l A. 80 ml. B. 320 ml. C. 240 ml. D. 160 ml. Cu 86. Cho 11,36 gam hn hp gm Fe, FeO, Fe2O3 v Fe3O4 phn ng ht vi dung dch HNO3 long (d), thu c 1,344 lt kh NO (sn phm kh duy nht, ktc) v dung dch X. C cn dung dch X thu c m gam mui khan. Gi tr ca m l A. 34,36. B. 35,50. C. 38,72. D. 49,09. Cu 87. Ha tan hon ton 20,88 gam mt oxit st bng dung dch H2SO4 c, nng thu c dung dch X v 3,248 lt kh SO2 (sn phm kh duy nht, ktc). C cn dung dch X, thu c m gam mui sunfat khan. Gi tr ca m l A. 52,2. B. 54,0. C. 58,0. D. 48,4. Cu 88. Cho 0,01 mol mt hp cht ca st tc dng ht vi H2SO4 c nng (d), thot ra 0,112 lt (ktc) kh SO2 l sn phm kh duy nht). Cng thc ca hp cht st l A. FeO. B. FeCO3. C. FeS. D. FeS2. Cu 89. Kh hon ton mt oxit st X nhit cao cn va V lt kh CO ( ktc), sau phn ng thu c 0,84 gam Fe v 0,02 mol kh CO2. Cng thc ca X v gi tr V ln lt l A. Fe3O4 v 0,448. B. FeO v 0,224. C. Fe2O3 v 0,448. D. Fe3O4 v 0,224. Cu 90. Cho 4,48 lt kh CO ( ktc) t t i qua ng s nung nng ng 8 gam mt oxit st n khi phn ng xy ra hon ton. Kh thu c sau phn ng c t khi so vi hiro bng 20. Cng thc ca oxit st v phn trm th tch ca kh CO2 trong hn hp kh sau phn ng l A. Fe2O3; 75%. B. FeO; 75%. C. Fe3O4; 75%. D. Fe2O3; 65%. Cu 91. Cho m gam Mg vo dung dch cha 0,12 mol FeCl3. Sau khi phn ng xy ra hon ton thu c 3,36 gam cht rn. Gi tr ca m l A. 5,04. B. 4,32. C. 2,88. D. 2,16. Cu 92. Cho 100 ml dung dch FeCl2 1,2M tc dng vi 200 ml dung dch AgNO3 2M, thu c m gam kt ta. Gi tr ca m l A. 34,44. B. 12,96. C. 30,18. D. 47,4. Cu 93. Ho tan hon ton 24,4 gam hn hp gm FeCl2 v NaCl (c t l s mol tng ng l 1 : 2) vo mt lng nc (d), thu c dung dch X. Cho dung dch AgNO3 (d) vo dung dch X, sau khi phn ng xy ra hon ton sinh ra m gam cht rn. Gi tr ca m l A. 10,8. B. 28,7. C. 57,4. D. 68,2.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 94. Nung mt hn hp rn gm a mol FeCO3 v b mol FeS2 trong bnh kn cha khng kh (d). Sau khi cc phn ng xy ra hon ton, a bnh v nhit ban u, thu c cht rn duy nht l Fe2O3 v hn hp kh. Bit p sut kh trong bnh trc v sau phn ng bng nhau, mi lin h gia a v b l (bit sau cc phn ng, lu hunh mc oxi ho +4). A. a = 2b. B. a = 4b. C. a = b. D. a = 0,5b. Cu 95. Trn 5,6 gam bt st vi 2,4 gam bt lu hunh ri nung nng (trong iu kin khng c khng kh), thu c hn hp rn M. Cho M tc dng vi lng d dung dch HCl, gii phng hn hp kh X v cn li mt phn khng tan G. t chy hon ton X v G cn va V lt kh O2 ( ktc). Gi tr ca V l A. 3,08. B. 2,80. C. 3,36. D. 4,48. Crom, ng, niken, ch, km, bc, vng, thic: 2. Cu 96. Pht biu khng ng l: A. Hp cht Cr(II) c tnh kh c trng cn hp cht Cr(VI) c tnh oxi ho mnh. B. Thm dung dch kim vo mui icromat, mui ny chuyn thnh mui cromat. C. Cc hp cht Cr2O3, Cr(OH)3, CrO, Cr(OH)2 u c tnh cht lng tnh. D. Cc hp cht CrO, Cr(OH)2 tc dng c vi dung dch HCl cn CrO3 tc dng c vi dung dch NaOH. Cu 97. Cho s chuyn ho gia cc hp cht ca crom:+ (Cl + KOH) + H2 SO4 + FeSO4 + H2 SO4 + KOH Cr(OH)3 X 2 Y Z T .

Cc cht X, Y, Z, T theo th t ln lt l: A. K2CrO4; KCrO2; K2Cr2O7; Cr2(SO4)3. B. KCrO2; K2CrO4; K2Cr2O7; Cr2(SO4)3. C. KCrO2; K2Cr2O7; K2CrO4; CrSO4. D. KCrO2; K2Cr2O7; K2CrO4; Cr2(SO4)3. Cu 98. Cho cc dung dch: HCl, NaOH c, NH3, KCl. S dung dch phn ng c vi Cu(OH)2 l A. 1. B. 3. C. 2. D. 4. Cu 99. Cho cc phn ng: (1) Cu2O + Cu2S (3) CuO + COt t o o

(2) Cu(NO3)2

t . t . o

(4) CuO + NH3

S phn ng to ra kim loi Cu l : A. 4. B. 1. C. 3. D. 2. Cu 100. Trng hp xy ra phn ng l A. Cu + HCl (long) B.Cu + H2SO4 (long) C. Cu + HCl (long) + O2 D. Cu + Pb(NO3)2 (long) Cu 101. Cho s chuyn ha qung ng thnh ng :+ X,t 2 CuFeS2 X 2 Y Cu. + O ,t 0 +O ,t0 0

Hai cht X, Y ln lt l A. CuS, CuO. B. Cu2S, Cu2O. C. Cu2S, CuO. D. Cu2O, CuO . Cu 102. iu ch c 78 gam Cr t Cr2O3 (d) bng phng php nhit nhm vi hiu sut ca phn ng l 90% th khi lng bt nhm cn dng ti thiu l A. 45,0 gam. B. 40,5 gam. C. 81,0 gam. D. 54,0 gam. Cu 103. Nung hn hp bt gm 15,2 gam Cr2O3 v m gam Al nhit cao. Sau khi phn ng hon ton, thu c 23,3 gam hn hp rn X. Cho ton b hn hp X phn ng vi axit HCl (d) thot ra V lt kh H2 (ktc). Gi tr ca V l A. 4,48. B. 7,84. C. 3,36. D. 10,08. Cu 104. Khi cho 41,4 gam hn hp X gm Fe2O3, Cr2O3 v Al2O3 tc dng vi dung dch NaOH c (d), sau phn ng thu c cht rn c khi lng 16 gam. kh hon ton 41,4 gam X bng phn ng nhit nhm, phi dng 10,8 gam Al. Thnh phn phn trm theo khi lng ca Cr2O3 trong hn hp X l A. 20,33%. B. 50,67%. C. 66,67%. D. 36,71%. Cu 105. oxi ha hon ton 0,01 mol CrCl3 thnh K2CrO4 bng Cl2 khi c mt KOH, lng ti thiu Cl2 v KOH tng ng l A. 0,03 mol v 0,04 mol. B. 0,03 mol v 0,08 mol. C. 0,015 mol v 0,08 mol. D. 0,015 mol v 0,04 mol. Cu 106. Ha tan hon ton 1,23 gam hn hp X gm Cu v Al vo dung dch HNO3 c, nng thu c 1,344 lt kh NO2 (sn phm kh duy nht, ktc) v dung dch Y. Sc t t kh NH3 (d) vo dung dch Y, sau khi phn ng xy ra hon ton thu c m gam kt ta. Phn trm v khi lng ca Cu trong hn hp X v gi tr ca m ln lt l A. 78,05% v 2,25. B. 21,95% v 2,25. C. 21,95% v 0,78. D. 78,05% v 0,78. Cu 107. Ho tan hon ton 14,6 gam hn hp X gm Al v Sn bng dung dch HCl (d), thu c 5,6 lt kh H2 ( ktc). Th tch kh O2 ( ktc) cn phn ng hon ton vi 14,6 gam hn hp X l A. 2,80 lt. B. 3,92 lt. C. 4,48 lt. D. 1,68 lt. Cu 108. Khi ho tan hon ton 0,02 mol Au bng nc cng toan th s mol HCl phn ng v s mol NO (sn phm kh duy nht) to thnh ln lt l A. 0,06 v 0,01. B. 0,03 v 0,02. C. 0,06 v 0,02. D. 0,03 v 0,01. Cu 109. Nung nng m gam PbS ngoi khng kh sau mt thi gian, thu c hn hp rn (c cha mt oxit) nng 0,95m gam. Phn trm khi lng PbS b t chy l A. 74,69%. B. 64,68%. C. 95,00%. D. 25,31%. Tng hp ni dung cc kin thc ha v c thuc chng trnh ph thng: 6. Cu 110. C th dng NaOH ( th rn) lm kh cc cht kh. A. NH3, O2, N2, CH4, H2. B. N2, NO2, CO2, CH4, H2. C. NH3, SO2, CO, Cl2.

D. N2, Cl2, O2, CO2, H2.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 111. Cht dng lm kh kh Cl2 m l A. dung dch NaOH B. nc brom. C. dung dch Ba(OH)2 . D. CaO. Cu 112. thu ly Ag tinh khit t hn hp X (gm a mol Al2O3, b mol CuO, c mol Ag2O), ngi ta ho tan X bi dung dch cha (6a + 2b + 2c) mol HNO3 c dung dch Y, sau thm (gi thit hiu sut cc phn ng u l 100%). A. 2c mol bt Cu vo Y. B. c mol bt Al vo Y. C. 2c mol bt Al vo Y. D. c mol bt Cu vo Y. Cu 113. phn bit CO2 v SO2 ch cn dng thuc th l A. dung dch NaOH. B. nc brom. C. dung dch Ba(OH)2. D. CaO. Cu 114. nhn bit ba axit c, ngui: HCl, H2SO4, HNO3 ng ring bit trong ba l b mt nhn, ta dng thuc th l A. Al. B. Cu. C. Fe. D. CuO. Cu 115. C th phn bit 3 dung dch: KOH, HCl, H2SO4 (long) bng mt thuc th l A. giy qu tm. B. Al. C. BaCO3. D. Zn. Cu 116. Ch dng dung dch KOH phn bit c cc cht ring bit trong nhm no sau y? A. Mg, K, Na. B. Fe, Al2O3, Mg. C. Zn, Al2O3, Al. D. Mg, Al2O3, Al. Cu 117. Hn hp X cha Na2O, NH4Cl, NaHCO3 v BaCl2 c s mol mi cht u bng nhau. Cho hn hp X vo H2O (d), un nng, dung dch thu c cha. A. NaCl, NaOH. B. NaCl, NaHCO3, NH4Cl, BaCl2. C. NaCl, NaOH, BaCl2. D. NaCl. Cu 118. Cho bn hn hp, mi hn hp gm hai cht rn c s mol bng nhau: Na2O v Al2O3; Cu v FeCl3; BaCl2 v CuSO4; Ba v NaHCO3. S hn hp c th tan hon ton trong nc (d) ch to ra dung dch l A. 2. B. 1. C. 3. D. 4. Cu 119. C 4 dung dch mui ring bit: CuCl2, ZnCl2, FeCl3, AlCl3. Nu thm dung dch KOH (d) ri thm tip dung dch NH3 (d) vo 4 dung dch trn th s cht kt ta thu c l A. 2. B. 3. C. 4. D. 1. Cu 120. Trong cc dung dch: HNO3, NaCl, Na2SO4, Ca(OH)2, KHSO4, Mg(NO3)2 dy gm cc cht u tc dng c vi dung dch Ba(HCO3)2 l: A. NaCl, Na2SO4, Ca(OH)2. B. HNO3, NaCl, Na2SO4. C. HNO3, Ca(OH)2, KHSO4, Na2SO4. D. HNO3, Ca(OH)2, KHSO4, Mg(NO3)2. Cu 121. Cho cc dung dch: HCl, NaOH c, NH3, KCl. S dung dch phn ng c vi Cu(OH)2 l A. 2. B. 1. C. 3. D. 4. Cu 122. Hn hp rn X gm Al, Fe2O3 v Cu c s mol bng nhau. Hn hp X tan hon ton trong dung dch. A. AgNO3 (d). B. HCl (d). C. NH3 (d). D. NaOH (d). Cu 123. Cho dy cc cht: KOH, Ca(NO3)2, SO3, NaHSO4, Na2SO3, K2SO4. S cht trong dy to thnh kt ta khi phn ng vi dung dch BaCl2 l A. 6. B. 3. C. 4. D. 2. Cu 124. C nm dung dch ng ring bit trong nm ng nghim: (NH4)2SO4, FeCl2, Cr(NO3)3, K2CO3, Al(NO3)3. Cho dung dch Ba(OH)2 n d vo nm dung dch trn. Sau khi phn ng kt thc, s ng nghim c kt ta l A. 4. B. 5. C. 3. D. 2. Cu 125. Th nghim no sau y c kt ta sau phn ng? A. Cho dung dch HCl n d vo dung dch NaAlO2 (hoc Na[Al(OH)4]) B. Thi CO2 n d vo dung dch Ca(OH)2. C. Cho dung dch NaOH n d vo dung dch Cr(NO3)3. D. Cho dung dch NH3 n d vo dung dch AlCl3 Cu 126. Cc kh c th cng tn ti trong mt hn hp l A. H2S v Cl2. B. HI v O3. C. NH3 v HCl. D. Cl2 v O2. Cu 127. Dy gm cc ion (khng k n s phn li ca nc) cng tn ti trong mt dung dch l: A. Al3+,

NH + , Br-, OH-. 4

B. H+, Fe3+,

NO3 , SO2- . C. Mg2+, K+, SO 2- , PO3- . D. Ag+, Na+, NO3 , Cl-. 4 4 4

Cu 128. Trng hp no sau y khng xy ra phn ng ho hc? A. Sc kh H2S vo dung dch CuCl2. B. Cho Fe vo dung dch H2SO4 long, ngui. C. Sc kh Cl2 vo dung dch FeCl2. D. Sc kh H2S vo dung dch FeCl2. Cu 129. C cc th nghim sau: (I) Nhng thanh st vo dung dch H2SO4 long, ngui. (II) Sc kh SO2 vo nc brom. (III) Sc kh CO2 vo nc Gia-ven.(IV) Nhng l nhm vo dung dch H2SO4 c, ngui. S th nghim xy ra phn ng ho hc l A. 3. B. 4. C. 1. D. 2. Cu 130. Ho tan m gam hn hp gm Al, Fe vo dung dch H2SO4 long (d). Sau khi cc phn ng xy ra hon ton, thu c dung dch X. Cho dung dch Ba(OH)2 (d) vo dung dch X, thu c kt ta Y. Nung Y trong khng kh n khi lng khng i, thu c cht rn Z l A. hn hp gm BaSO4 v Fe2O3. B. hn hp gm BaSO4 v FeO. C. hn hp gm Al2O3 v Fe2O3. D. Fe2O3. Cu 131. Cho cc phn ng sau : H2S + O2 (d) NH3 + O2t Kh X + H2O. 850 C,Pt Kh Y + H2O. 0 0

NH4HCO3 + HCl long Kh Z + NH4Cl + H2O.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCc kh X, Y, Z thu c ln lt l A. SO2, NO, CO2. B. SO3, NO, NH3. C. SO3, N2, CO2. Cu 132. Cho s chuyn ho (mi mi tn l mt phng trnh phn ng):+ dd + dd + dd NaOH X Fe(OH)2 Y Fe2 (SO4 )3 Z BaSO4.

D. SO2, N2, NH3.

Cc dd (dung dch) X, Y, Z ln lt l: A. FeCl2, H2SO4 c nng, BaCl2. B. FeCl3, H2SO4 (c, nng), Ba(NO3)2. C. FeCl3, H2SO4 c nng, BaCl2. D. FeCl3, H2SO4 c nng, Ba(NO3)2. Cu 133. Khi nhit phn hon ton tng mui X, Y th u to ra s mol kh nh hn s mol mui tng ng. t mt lng nh tinh th Y trn n kh khng mu, thy ngn la c mu vng. Hai mui X, Y ln lt l: A. KMnO4, NaNO3. B. NaNO3, KNO3. C. Cu(NO3)2, NaNO3. D. CaCO3, NaNO3. Cu 134. Cho kim loi M tc dng vi Cl2 c mui X; cho kim loi M tc dng vi dung dch HCl c mui Y. Nu cho kim loi M tc dng vi dung dch mui X ta cng c mui Y. Kim loi M c th l A. Mg. B. Al. C. Fe. D. Zn. Ha hc v vn pht trin kinh t, x hi, mi trng: 1. Cu 135. T l s ngi cht v bnh phi do ht thuc l gp hng chc ln s ngi khng ht thuc l. Cht gy nghin v gy ung th c trong thuc l l A. aspirin. B. moocphin. C. nicotin. D. cafein. Cu 136. Dy gm cc cht v thuc u c th gy nghin cho con ngi l A. heroin, seduxen, erythromixin. B. penixilin, paradol, cocain. C. cocain, seduxen, cafein. D. ampixilin, erythromixin, cafein. Cu 137. Tc nhn ch yu gy ma axit l A. SO2 v NO2. B. CH4 v NH3. C. CO v CH4. D. CO v CO2. Cu 138. Hi thu ngn rt c, bi vy khi lm v nhit k thu ngn th cht bt c dng rc ln thu ngn ri gom li l A. lu hunh. B. ct. C. mui n. D. vi sng. Nguyn t, bng tun hon cc nguyn t ha hc - lin kt ha hc: 2. Cu 139. Mt nguyn t ca nguyn t X c tng s ht proton, ntron, electron l 52 v c s khi l 35. S hiu nguyn t ca nguyn t X l A. 17. B. 15. C. 23. D. 18. Cu 140. Trong hp cht ion XY (X l kim loi, Y l phi kim), s electron ca cation bng s electron ca anion v tng s electron trong XY l 20. Bit trong mi hp cht, Y ch c mt mc oxi ha duy nht. Cng thc XY l A. NaF. B. AlN. C. MgO. D. LiF. Cu 141. Nguyn t ca nguyn t X c tng s ht electron trong cc phn lp p l 7. S ht mang in ca mt nguyn t Y nhiu hn s ht mang in ca mt nguyn t X l 8 ht. Cc nguyn t X v Y ln lt l (bit s hiu nguyn t ca nguyn t: Na = 11; Al = 13; P = 15; Cl = 17; Fe = 26). A. Al v P. B. Fe v Cl. C. Al v Cl. D. Na v Cl. Cu 142. Trong t nhin, nguyn t ng c hai ng v l phn trm tng s nguyn t ca ng v65 29 63 29

Cu v 65 Cu . Nguyn t khi trung bnh ca ng l 63,54. Thnh phn 29

A. 73%. B. 54%. C. 50. D. 27%. Cu 143. Dy gm cc ion X+, Y- v nguyn t Z u c cu hnh electron 1s22s22p6 l: A. K+, Cl-, Ar. B. Na+, F-, Ne. C. Na+, Cl-, Ar. D. Li+, F-, Ne. Cu 144. Anion X- v cation Y2+ u c cu hnh electron lp ngoi cng l 3s23p6. V tr ca cc nguyn t trong bng tun hon cc nguyn t ha hc l: A. X c s th t 17, chu k 3, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 4, nhm IIA (phn nhm chnh nhm II). B. X c s th t 18, chu k 3, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 3, nhm IIA (phn nhm chnh nhm II). C. X c s th t 17, chu k 4, nhm VIIA (phn nhm chnh nhm VII); Y c s th t 20, chu k 4, nhm IIA (phn nhm chnh nhm II). D. X c s th t 18, chu k 3, nhm VIA (phn nhm chnh nhm VI); Y c s th t 20, chu k 4, nhm IIA (phn nhm chnh nhm II). Cu 145. Cu hnh electron ca ion X2+ l 1s22s22p63s23p63d6. Trong bng tun hon cc nguyn t ho hc, nguyn t X thuc. A. chu k 3, nhm VIB. B. chu k 4, nhm VIIIB. C. chu k 4, nhm IIA. D. chu k 4, nhm VIIIA. Cu 146. Nguyn t ca nguyn t X c electron mc nng lng cao nht l 3p. Nguyn t ca nguyn t Y cng c electron mc nng lng 3p v c mt electron lp ngoi cng. Nguyn t X v Y c s electron hn km nhau l 2. Nguyn t X, Y ln lt l A. kh him v kim loi. B. kim loi v kim loi. C. phi kim v kim loi. D. kim loi v kh him. Cu 147. Trong mt nhm A (phn nhm chnh), tr nhm VIIIA (phn nhm chnh nhm VIII), theo chiu tng ca in tch ht nhn nguyn t th. A. tnh kim loi tng dn, m in tng dn. B. tnh kim loi tng dn, bn knh nguyn t gim dn. C. m in gim dn, tnh phi kim tng dn. D. tnh phi kim gim dn, bn knh nguyn t tng dn. Cu 148. Cho cc nguyn t M (Z = 11), X (Z = 17), Y (Z = 9) v R (Z = 19). m in ca cc nguyn t tng dn theo th t.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BA. R < M < X < Y. B. M < X < R < Y. C. Y < M < X < R. D. M < X < Y < R. Cu 149. Bn knh nguyn t ca cc nguyn t: 3Li, 8O, 9F, 11Na c xp theo th t tng dn t tri sang phi l A. F, Li, O, Na. B. F, Na, O, Li. C. Li, Na, O, F. D. F, O, Li, Na. Cu 150. Cho cc nguyn t: K (Z = 19), N (Z = 7), Si (Z = 14), Mg (Z = 12). Dy gm cc nguyn t c sp xp theo chiu gim dn bn knh nguyn t t tri sang phi l: A. K, Mg, N, Si. B. Mg, K, Si, N. C. K, Mg, Si, N. D. N, Si, Mg, K. Cu 151. Dy cc nguyn t sp xp theo chiu tng dn tnh phi kim t tri sang phi l: A. P, N, O, F. B. P, N, F, O. C. N, P, F, O. D. N, P, O, F. Cu 152. Cng thc phn t ca hp cht kh to bi nguyn t R v hiro l RH3. Trong oxit m R c ho tr cao nht th oxi chim 74,07% v khi lng. Nguyn t R l A. As. B. S. C. N. D. P. Cu 153. Nguyn t ca nguyn t X c cu hnh electron lp ngoi cng l ns2np4. Trong hp cht kh ca nguyn t X vi hiro, X chim 94,12% khi lng. Phn trm khi lng ca nguyn t X trong oxit cao nht l A. 40,00%. B. 50,00%. C. 27,27%. D. 60,00%. Cu 154. Hp cht trong phn t c lin kt ion l A. NH4Cl. B. HCl. C. NH3. D. H2O. Cu 155. Dy gm cc cht trong phn t ch c lin kt cng ho tr phn cc l: A. HCl, O3, H2S. B. H2O, HF, H2S. C. O2, H2O, NH3. D. HF, Cl2, H2O. Cu 156. Nguyn t ca nguyn t X c cu hnh electron 1s22s22p63s23p64s1, nguyn t ca nguyn t Y c cu hnh electron 1s22s22p5. Lin kt ho hc gia nguyn t X v nguyn t Y thuc loi lin kt. A. cho nhn. B. kim loi. C. cng ho tr. D. ion. Cu 157. Pht biu no sau y l ng ? A. th rn, NaCl tn ti di dng tinh th phn t. B. Photpho trng c cu trc tinh th nguyn t. C. Kim cng c cu trc tinh th phn t. D. Nc thuc loi tinh th phn t. Phn ng oxi ha - kh, tc phn ng v cn bng ha hc: 2 + 0,5. Cu 158. Cho cc phn ng sau: a) FeO + HNO3 (c, nng) b) FeS + H2SO4 (c, nng) . c) Al2O3 + HNO3 (c, nng) d) Cu + dung dch FeCl3 . e) CH3CHO + H2 f) glucoz + AgNO3 trong dung dch NH3 g) C2H4 + Br2 h) glixerol (glixerin) + Cu(OH)2 . Dy gm cc phn ng u thuc loi phn ng oxi ha - kh l: A. a, b, d, e, f, h. B. a, b, c, d, e, h. C. a, b, c, d, e, g. D. a, b, d, e, f, g. Cu 159. Cho tng cht: Fe, FeO, Fe(OH)2, Fe(OH)3, Fe3O4, Fe2O3, Fe(NO3)2, Fe(NO3)3, FeSO4, Fe2(SO4)3, FeCO3 ln lt phn ng vi HNO3 c, nng. S phn ng thuc loi phn ng oxi ho - kh l A. 5. B. 7. C. 8. D. 6. Cu 160. Cho cc phn ng: Ca(OH)2 + Cl2 CaOCl2 2H2S + SO2 3S + 2H2O. 2NO2 + 2NaOH NaNO3 + NaNO2 + H2O 4KClO3 + SO2

3S + 2H2O.

O3 O2 + O. S phn ng oxi ho kh l A. 3. B. 5. C. 2. D. 4. Cu 161. Tng h s (cc s nguyn, ti gin) ca tt c cc cht trong phng trnh phn ng gia Cu vi dung dch HNO3 c, nng l A. 11. B. 10. C. 8. D. 9. Cu 162. Cho phng trnh ho hc: Fe3O4 + HNO3 Fe(NO3)3 + NxOy + H2O Sau khi cn bng phng trnh ho hc trn vi h s ca cc cht l nhng s nguyn, ti gin th h s ca HNO3 l A. 45x - 18y. B. 46x - 18y. C. 13x - 9y. D. 23x - 9y. Cu 163. Trong phn ng t chy CuFeS2 to ra sn phm CuO, Fe2O3 v SO2 th mt phn t CuFeS2 s. A. nhn 13 electron. B. nhng 13 electron. C. nhng 12 electron. D. nhn 12 electron. Cu 164. Cho bit cc phn ng xy ra sau: 2FeBr2 + Br2 2FeBr3. 2NaBr + Cl2 2NaCl + Br2. Pht biu ng l: A. Tnh kh ca Cl- mnh hn ca Br -. B. Tnh kh ca Br- mnh hn ca Fe2+. C. Tnh oxi ha ca Br2 mnh hn ca Cl2. D. Tnh oxi ha ca Cl2 mnh hn ca Fe3+. Cu 165. Cho dy cc cht v ion: Zn, S, FeO, SO2, N2, HCl, Cu2+, Cl-. S cht v ion c c tnh oxi ha v tnh kh l A. 7. B. 4. C. 5. D. 6. Cu 166. Cho dy cc cht v ion: Cl2, F2, SO2, Na+, Ca2+, Fe2+, Al3+, Mn2+, S2-, Cl-. S cht v ion trong dy u c tnh oxi ho v tnh kh l A. 3. B. 6. C. 4. D. 5.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 167. Cho cht xc tc MnO2 vo 100 ml dung dch H2O2, sau 60 giy thu c 33,6 ml kh O2 ( ktc). Tc trung bnh ca phn ng (tnh theo H2O2) trong 60 giy trn l A. 5,0.104 mol/(l.s). B. 2,5.104 mol/(l.s). C. 5,0.105 mol/(l.s). D. 5,0.103 mol/(l.s). Cu 168. Cho phng trnh ha hc ca phn ng tng hp amoniac.t N 2 (k) + 3H 2 (k) 2NH3 (k) . xto

Khi tng nng ca hiro ln 2 ln, tc phn ng thun: A. tng ln 8 ln. B. tng ln 2 ln. C. gim i 2 ln. D. tng ln 6 ln. Cu 169. Mt bnh phn ng c dung tch khng i, cha hn hp kh N2 v H2 vi nng tng ng l 0,3M v 0,7M. Sau khi phn ng tng hp NH3 t trng thi cn bng t oC, H2 chim 50% th tch hn hp thu c. Hng s cn bng KC t oC ca phn ng c gi tr l A. 3,125. B. 0,500. C. 0,609. D. 2,500. Cu 170. Cho cc cn bng sau:

(1) H 2 (k) + I2 (k) 2HI (k) 1 H 2 (k) + 1 I 2 (k) (3) HI (k) 2 2 (5) H 2 (k) + I2 (r) 2HI (k)

1 1 (2) H2 (k) + I2 (k) HI (k) 2 2 (4) 2HI (k) H2 (k) + I2 ( k) .

nhit xc nh, nu KC ca cn bng (1) bng 64 th KC bng 0,125 l ca cn bng. A. (5). B. (4). C. (3). A. Cn bng chuyn dch theo chiu thun khi tng nhit . B. Cn bng chuyn dch theo chiu nghch khi gim nng O2. C. Cn bng chuyn dch theo chiu thun khi gim p sut h phn ng. D. Cn bng chuyn dch theo chiu nghch khi gim nng SO3. Cu 172. Cho cn bng (trong bnh kn) sau: CO (k) + H2O (k)

2SO (k); phn ng thun l phn ng ta nhit. Pht biu ng l: Cu 171. Cho cn bng ha hc: 2SO2 (k) + O2 (k) 3

D. (2).

CO2 (k) +

H2 (k)

H < 0.

Trong cc yu t: (1) tng nhit ; (2) thm mt lng hi nc; (3) thm mt lng H2; (4) tng p sut chung ca h; (5) dng cht xc tc. Dy gm cc yu t u lm thay i cn bng ca h l: A. (1), (4), (5). B. (1), (2), (3). C. (1), (2), (4). D. (2), (3), (4).

Cu 173. Cho cn bng ho hc: N2 (k) + 3H2 (k) 2NH3 (k); phn ng thun l phn ng to nhit. Cn bng ho hc khng b chuyn dch khi. A. thay i p sut ca h. B. thay i nhit . Cu 174. Cho cc cn bng ho hc: C. thm cht xc tc Fe. D. thay i nng N2.

N2 (k) + 3H2 (k)

2NH3 (k)(1)

H2 (k) + I2 (k) 2HI (k)(2). 2NO2 (k) N2O4 (k)(4). C. (1), (2), (3). (2) N2 (k) + 3H2 (k) D. (2), (3), (4).

2SO2 (k) + O2 (k) 2SO3 (k)(3) Khi thay i p sut nhng cn bng ha hc b chuyn dch l: A. (1), (2), (4). B. (1), (3), (4). Cu 175. Cho cc cn bng sau:

(1) 2SO2(k) + O2(k) 2SO3(k) (3) CO2(k) + H2(k) CO(k) + H2O(k)

2NH3 (k).

(4) 2HI (k) H2 (k) + I2 (k). D. (3) v (4).

Khi thay i p sut, nhm gm cc cn bng ho hc u khng b chuyn dch l A. (1) v (3). B. (1) v (2). C. (2) v (4). Cu 176. Cho cn bng sau trong bnh kn: 2NO2 N2O4.

(mu nu ) (khng mu). Bit khi h nhit ca bnh th mu nu nht dn. Phn ng thun c: A. H < 0, phn ng thu nhit. B. H < 0, phn ng to nhit. C. H > 0, phn ng to nhit. D. H > 0, phn ng thu nhit. Cu 177. Hng s cn bng ca phn ng xc nh ch ph thuc vo. A. nhit . B. nng . C. p sut. S in li: 2 + 0,5.

D. cht xc tc.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 178. Dung dch HCl v dung dch CH3COOH c cng nng mol/l, pH ca hai dung dch tng ng l x v y. Quan h gia x v y l (gi thit, c 100 phn t CH3COOH th c 1 phn t in li). A. y = 2x. B. y = x + 2. C. y = x - 2. D. y = 100x. Cu 179. Cho dung dch X cha hn hp gm CH3COOH 0,1M v CH3COONa 0,1M. Bit 25 oC, Ka ca CH3COOH l 1,75.10-5 v b qua s phn li ca nc. Gi tr pH ca dung dch X 25 oC l A. 2,88. B. 4,76. C. 1,00. D. 4,24. Cu 180. Cho dy cc cht: KAl(SO4)2.12H2O, C2H5OH, C12H22O11 (saccaroz), CH3COOH, Ca(OH)2, CH3COONH4. S cht in li l A. 5. B. 4. C. 2. D. 3. Cu 181. Cho dy cc cht: Ca(HCO3)2, NH4Cl, (NH4)2CO3, ZnSO4, Al(OH)3, Zn(OH)2. S cht trong dy c tnh cht lng tnh l A. 3. B. 5. C. 4. D. 2. Cu 182. Cho dy cc cht: Cr(OH)3, Al2(SO4)3, Mg(OH)2, Zn(OH)2, MgO, CrO3. S cht trong dyc tnh cht lng tnh l A. 4. B. 5. C. 3. D. 2. Cu 183. Cc hp cht trong dy cht no di y u c tnh lng tnh? A. Cr(OH)3, Fe(OH)2, Mg(OH)2 B. Cr(OH)3, Zn(OH)2, Mg(OH)2 C. Cr(OH)3, Pb(OH)2, Mg(OH)2. D. Cr(OH)3, Zn(OH)2, Pb(OH)2. Cu 184. Cho cc cht: Al, Al2O3, Al2(SO4)3, Zn(OH)2, NaHS, K2SO3, (NH4)2CO3. S cht u phn ng c vi dung dch HCl, dung dch NaOH l A. 5. B. 7. C. 4. D. 6. Cu 185. Dy gm cc cht va tan trong dung dch HCl, va tan trong dung dch NaOH l: A. NaHCO3, MgO, Ca(HCO3)2. B. NaHCO3, ZnO, Mg(OH)2. C. Mg(OH)2, Al2O3, Ca(HCO3)2. D. NaHCO3, Ca(HCO3)2, Al2O3. Cu 186. Trong s cc dung dch: Na2CO3, KCl, CH3COONa, NH4Cl, NaHSO4, C6H5ONa, nhng dung dch c pH > 7 l A. KCl, C6H5ONa, CH3COONa. B. NH4Cl, CH3COONa, NaHSO4. C. Na2CO3, NH4Cl, KCl. D. Na2CO3, C6H5ONa, CH3COONa. Cu 187. Cho cc dung dch c cng nng : Na2CO3 (1), H2SO4 (2), HCl (3), KNO3 (4). Gi tr pH ca cc dung dch c sp xp theo chiu tng t tri sang phi l: A. (2), (3), (4), (1). B. (1), (2), (3), (4). C. (3), (2), (4), (1). D. (4), (1), (2), (3). - Hn hp axit td hn hp baz. Pt ion thu gn. Bt in tch. Cu 188. Cho 4 phn ng: (1) Fe + 2HCl FeCl2 + H2. (2) 2NaOH + (NH4)2SO4 Na2SO4 + 2NH3 + 2H2O. (3) BaCl2 + Na2CO3 BaCO3 + 2NaCl. (4) 2NH3 + 2H2O + FeSO4 Fe(OH)2 + (NH4)2SO4. Cc phn ng thuc loi phn ng axit - baz l A. (2), (4). B. (1), (2). C. (3), (4). D. (2), (3). Cu 189. Cho cc phn ng ha hc sau: (1) (NH4)2SO4 + BaCl2 (2) CuSO4 + Ba(NO3)2 . (3) Na2SO4 + BaCl2 (4) H2SO4 + BaSO3 . (5) (NH4)2SO4 + Ba(OH)2 (6) Fe2(SO4)3 + Ba(NO3)2 . Cc phn ng u c cng mt phng trnh ion rt gn l: A. (1), (2), (3), (6). B. (3), (4), (5), (6). C. (1), (3), (5), (6). D. (2), (3), (4), (6). Cu 190. Trn ln V ml dung dch NaOH 0,01M vi V ml dung dch HCl 0,03 M c 2V ml dung dch Y. Dung dch Y c pH l A. 3. B. 1. C. 2. D. 4. Cu 191. Trn 100 ml dung dch (gm Ba(OH)2 0,1M v NaOH 0,1M) vi 400 ml dung dch (gm H2SO4 0,0375M v HCl 0,0125M), thu c dung dch X. Gi tr pH ca dung dch X l A. 2. B. 6. C. 1. D. 7. Cu 192. Trn 100 ml dung dch hn hp gm H2SO4 0,05M v HCl 0,1M vi 100 ml dung dch hn hp gm NaOH 0,2M v Ba(OH)2 0,1M, thu c dung dch X. Dung dch X c pH l A. 1,0. B. 12,8. C. 1,2. D. 13,0. Cu 193. Trn 100 ml dung dch c pH = 1 gm HCl v HNO3 vi 100 ml dung dch NaOH nng a (mol/l) thu c 200 ml dung dch c pH = 12. Gi tr ca a l A. 0,12. B. 0,15. C. 0,03. D. 0,30. Cu 194. Cho dung dch cha 0,1 mol (NH4)2CO3 tc dng vi dung dch cha 34,2 gam Ba(OH)2. Sau phn ng thu c m gam kt ta. Gi tr ca m l A. 17,1. B. 19,7. C. 15,5. D. 39,4. Cu 195. Mt dung dch cha 0,02 mol Cu2+, 0,03 mol K+, x mol Cl- v y mol

SO 2- . Tng khi lng cc mui tan c trong dung dch 4

l 5,435 gam. Gi tr ca x v y ln lt l: A. 0,01 v 0,03. B. 0,03 v 0,02. C. 0,05 v 0,01. D. 0,02 v 0,05. Cu 196. Ho tan hon ton hn hp gm 0,12 mol FeS2 v a mol Cu2S vo axit HNO3 (va ), thu c dung dch X (ch cha hai mui sunfat) v kh duy nht NO. Gi tr ca a l A. 0,075. B. 0,12. C. 0,06. D. 0,04. Cu 197. Hn hp X cha Na2O, NH4Cl, NaHCO3 v BaCl2 c s mol mi cht u bng nhau. Cho hn hp X vo H2O (d), un nng, dung dch thu c cha.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BA. NaCl, NaHCO3, NH4Cl, BaCl2. B. NaCl. C. NaCl, NaOH. D. NaCl, NaOH, BaCl2. Cu 198. Trong cc dung dch: HNO3, NaCl, Na2SO4, Ca(OH)2, KHSO4, Mg(NO3)2, dy gm cc cht u tc dng c vi dung dch Ba(HCO3)2 l: A. HNO3, Ca(OH)2, KHSO4, Mg(NO3)2. B. NaCl, Na2SO4, Ca(OH)2. C. HNO3, Ca(OH)2, KHSO4, Na2SO4. D. HNO3, NaCl, Na2SO4. Cu 199. Dung dch X cha cc ion: Fe3+, SO42-, NH4+, Cl-. Chia dung dch X thnh hai phn bng nhau: - Phn mt tc dng vi lng d dung dch NaOH, un nng thu c 0,672 lt kh ( ktc) v 1,07 gam kt ta;. - Phn hai tc dng vi lng d dung dch BaCl2, thu c 4,66 gam kt ta. Tng khi lng cc mui khan thu c khi c cn dung dch X l (qu trnh c cn ch c nc bay hi). A. 7,04 gam. B. 3,73 gam. C. 3,52 gam. D. 7,46 gam. Cu 200. Khi ha tan hiroxit kim loi M(OH)2 bng mt lng va dung dch H2SO4 20% thu c dung dch mui trung ho c nng 27,21%. Kim loi M l A. Fe. B. Mg. C. Zn. D. Cu. Phi kim (halogen - oxi, lu hunh - cacbon, silic - nit, photpho): 2. Cu 201. Trong phng th nghim, ngi ta thng iu ch clo bng cch. A. in phn dung dch NaCl c mng ngn. B. cho dung dch HCl c tc dng vi MnO2, un nng. C. in phn nng chy NaCl. D. cho F2 y Cl2 ra khi dung dch NaCl. Cu 202. Trong phng th nghim, ngi ta iu ch oxi bng cch. A. nhit phn KClO3 c xc tc MnO2. B. nhit phn Cu(NO3)2. C. in phn nc. D. chng ct phn on khng kh lng. Cu 203. ng dng no sau y khng phi ca ozon? A. iu ch oxi trong phng th nghim. B. Ty trng tinh bt, du n. C. St trng nc sinh hot. D. Cha su rng. Cu 204. Trong phng th nghim, iu ch mt lng nh kh X tinh khit, ngi ta un nng dung dch amoni nitrit bo ho. Kh X l A. N2O. B. N2. C. NO2. D. NO. Cu 205. Trong phng th nghim, ngi ta thng iu ch HNO3 t. A. NaNO3 v H2SO4 c. B. NaNO2 v H2SO4 c. C. NH3 v O2. D. NaNO3 v HCl c. Cu 206. Cho Cu v dung dch H2SO4 long tc dng vi cht X (mt loi phn bn ha hc), thy thot ra kh khng mu ha nu trong khng kh. Mt khc, khi X tc dng vi dung dch NaOH th c kh mi khai thot ra. Cht X l A. amophot. B. ure. C. natri nitrat. D. amoni nitrat. Cu 207. Phn bn no sau y lm tng chua ca t? A. NaNO3. B. NH4NO3. C. KCl. D. K2CO3. Cu 208. Thnh phn chnh ca qung photphorit l A. Ca(H2PO4)2. B. CaHPO4. C. NH4H2PO4. D. Ca3(PO4)2. Cu 209. Pht biu no sau y l ng? A. Phn ln cung cp nit ho hp cho cy di dng ion nitrat (NO3-) v ion amoni (NH4+). B. Amophot l hn hp cc mui (NH4)2HPO4 v KNO3. C. Phn hn hp cha nit, photpho, kali c gi chung l phn NPK. D. Phn ur c cng thc l (NH4)2CO3. Cu 210. Phn bn nitrophotka (NPK) l hn hp ca. A. (NH4)2HPO4 v KNO3. B. (NH4)2HPO4 v NaNO3. C. (NH4)3PO4 v KNO3. D. NH4H2PO4 v KNO3. Cu 211. Cho cc phn ng sau: (1) Cu(NO3 )2 t 850 (3) NH3 + O2 C,Pt 0

(2) NH4 NO 2 t . t (4) NH3 + Cl2 . 0

t (5) NH 4 Cl

t (6) NH3 + CuO .

Cc phn ng u to kh N2 l: A. (1), (2), (5). Cu 212. Cho cc phn ng sau: 4HCl + MnO2o

B. (2), (4), (6).

C. (1), (3), (4).

D. (3), (5), (6).

t MnCl2 + Cl2 + 2H2O. t 2KCl + 2CrCl3 + 3Cl2 + 7H2O. o

2HCl + Fe FeCl2 + H2. 14HCl + K2Cr2O7 6HCl + 2Al 2AlCl3 + 3H2. 16HCl + 2KMnO4 2KCl + 2MnCl2 + 5Cl2 + 8H2O.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BS phn ng trong HCl th hin tnh oxi ha l A. 3. B. 1. Cu 213. Cho cc phn ng sau: (a) 4HCl + PbO2 PbCl2 + Cl2 + 2H2O. (b) HCl + NH4HCO3 NH4Cl + CO2 + H2O. (c) 2HCl + 2HNO3 2NO2 + Cl2 + 2H2O. (d) 2HCl + Zn ZnCl2 + H2. S phn ng trong HCl th hin tnh kh l A. 2. B. 3. Cu 214. Cho cc phn ng : (1) O3 + dung dch KI (3) MnO2 + HCl ct 0

C. 4. (2) F2 + H2Ot . 0

(4) Cl2 + dung dch H2S . C. (1), (3), (4). B. NaHCO3t NH3 + HCl 0 0

Cc phn ng to ra n cht l : A. (1), (2), (3). B. (1), (2), (4) Cu 215. Phn ng nhit phn khng ng l : A. 2KNO3 2H2O. A. 3O2 + 2H2So

D. (2), (3), (4). C. NH4NO2t N2 + 0

t 2KNO2 + O2.

t NaOH + CO2.

D. NH4Cl

. B. FeCl2 + H2S FeS + 2HCl.

Cu 216. Trng hp khng xy ra phn ng ha hc lt 2SO2 + 2H2O

C. O3 + 2KI + H2O O2 + 2KOH + I2. D. Cl2 + 2NaOH NaCl + NaClO + H2O. Cu 217. Dy gm cc cht u tc dng c vi dung dch HCl long l: A. AgNO3, (NH4)2CO3, CuS. B. FeS, BaSO4, KOH. C. KNO3, CaCO3, Fe(OH)3. D. Mg(HCO3)2, HCOONa, CuO. Cu 218. Nu cho 1 mol mi cht: CaOCl2, KMnO4, K2Cr2O7, MnO2 ln lt phn ng vi lng d dung dch HCl c, cht to ra lng kh Cl2 nhiu nht l A. CaOCl2. B. K2Cr2O7. C. MnO2. D. KMnO4. Cu 219. Khi nhit phn hon ton 100 gam mi cht sau: KClO3 (xc tc MnO2), KMnO4, KNO3 v AgNO3. Cht to ra lng O2 ln nht l A. KMnO4. B. KNO3. C. KClO3. D. AgNO3. Cu 220. Cht kh X tan trong nc to ra mt dung dch lm chuyn mu qu tm thnh v c th c dng lm cht ty mu. Kh X l A. CO2. B. O3. C. SO2. D. NH3. Cu 221. SO2 lun th hin tnh kh trong cc phn ng vi. A. O2, nc Br2, dung dch KMnO4. B. dung dch NaOH, O2, dung dch KMnO4. C. dung dch KOH, CaO, nc Br2. D. H2S, O2, nc Br2. Cu 222. Trn 5,6 gam bt st vi 2,4 gam bt lu hunh ri nung nng (trong iu kin khng c khng kh), thu c hn hp rn M. Cho M tc dng vi lng d dung dch HCl, gii phng hn hp kh X v cn li mt phn khng tan G. t chy hon ton X v G cn va V lt kh O2 (ktc). Gi tr ca V l A. 2,80. B. 3,08. C. 3,36. D. 4,48. Cu 223. Cho 13,44 lt kh clo ( ktc) i qua 2,5 lt dung dch KOH 100oC. Sau khi phn ng xy ra hon ton, thu c 37,25 gam KCl. Dung dch KOH trn c nng l A. 0,24M. B. 0,48M. C. 0,2M. D. 0,4M. Cu 224. Cho dung dch cha 6,03 gam hn hp gm hai mui NaX v NaY (X, Y l hai nguyn t c trong t nhin, hai chu k lin tip thuc nhm VIIA, s hiu nguyn t ZX < ZY) vo dung dch AgNO3 (d), thu c 8,61 gam kt ta. Phn trm khi lng ca NaX trong hn hp ban u l A. 47,2%. B. 58,2%. C. 52,8%. D. 41,8%. NO3 trong H+, nhit phn ca mui nitrat.

Cu 225. Khi cho Cu tc dng vi dung dch cha H2SO4 long v NaNO3, vai tr ca NaNO3 trong phn ng l A. cht oxi ho. B. mi trng. C. cht kh. D. cht xc tc. Cu 226. Thc hin hai th nghim: 1) Cho 3,84 gam Cu phn ng vi 80 ml dung dch HNO3 1M thot ra V1 lt NO. 2) Cho 3,84 gam Cu phn ng vi 80 ml dung dch cha HNO3 1M v H2SO4 0,5 M thot ra V2 lt NO. Bit NO l sn phm kh duy nht, cc th tch kh o cng iu kin. Quan h gia V1 v V2 l A. V2 = 2V1. B. V2 = 2,5V1. C. V2 = V1. D. V2 = 1,5V1. Cu 227. Cho 3,2 gam bt Cu tc dng vi 100 ml dung dch hn hp gm HNO3 0,8M v H2SO4 0,2M. Sau khi cc phn ng xy ra hon ton, sinh ra V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca V l A. 1,792. B. 0,448. C. 0,746. D. 0,672. Cu 228. Cho m gam bt Fe vo 800 ml dung dch hn hp gm Cu(NO3)2 0,2M v H2SO4 0,25M. Sau khi cc phn ng xy ra hon ton, thu c 0,6m gam hn hp bt kim loi v V lt kh NO (sn phm kh duy nht, ktc). Gi tr ca m v V ln lt l A. 17,8 v 4,48. B. 17,8 v 2,24. C. 10,8 v 4,48. D. 10,8 v 2,24.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 229. Cho hn hp gm 1,12 gam Fe v 1,92 gam Cu vo 400 ml dung dch cha hn hp gm H2SO4 0,5M v NaNO3 0,2M. Sau khi cc phn ng xy ra hon ton, thu c dung dch X v kh NO (sn phm kh duy nht). Cho V ml dung dch NaOH 1M vo dung dch X th lng kt ta thu c l ln nht. Gi tr ti thiu ca V l A. 240. B. 400. C. 120. D. 360. Cu 230. Nung 6,58 gam Cu(NO3)2 trong bnh kn khng cha khng kh, sau mt thi gian thu c 4,96 gam cht rn v hn hp kh X. Hp th hon ton X vo nc c 300 ml dung dch Y. Dung dch Y c pH bng. A. 3. B. 2. C. 1. D. 4. Cu 231. Nhit phn hon ton 34,65 gam hn hp gm KNO3 v Cu(NO3)2, thu c hn hp kh X (t khi ca X so vi kh hiro bng 18,8). Khi lng Cu(NO3)2 trong hn hp ban u l A. 11,28 gam. B. 8,60 gam. C. 20,50 gam. D. 9,40 gam. Cu 232. Ho tan hon ton mt lng bt Zn vo mt dung dch axit X. Sau phn ng thu c dung dch Y v kh Z. Nh t t dung dch NaOH (d) vo Y, un nng thu c kh khng mu T. Axit X l A. HNO3. B. H2SO4 long. C. H2SO4 c. D. H3PO4. Cu 233. Cho 2,16 gam Mg tc dng vi dung dch HNO3 (d). Sau khi phn ng xy ra hon ton thu c 0,896 lt kh NO ( ktc) v dung dch X. Khi lng mui khan thu c khi lm bay hi dung dch X l A. 6,52 gam. B. 13,92 gam. C. 8,88 gam. D. 13,32 gam. Cu 234. Ho tan hon ton 12,42 gam Al bng dung dch HNO3 long (d), thu c dung dch X v 1,344 lt ( ktc) hn hp kh Y gm hai kh l N2O v N2. T khi ca hn hp kh Y so vi kh H2 l 18. C cn dung dch X, thu c m gam cht rn khan. Gi tr ca m l A. 106,38. B. 38,34. C. 97,98. D. 34,08. i cng v kim loi: 2. Dy th in cc chun: 1. Tc vt l, ha hc, dy th in cc chun. Cu 235. Dy cc ion xp theo chiu gim dn tnh oxi ho l (bit trong dy in ha, cp Fe3+/Fe2+ ng trc cp Ag+/Ag): A. Ag+, Fe3+, Cu2+, Fe2+. B. Fe3+, Ag+, Cu2+, Fe2+. C. Fe3+, Fe2+, Cu2+, Ag+. D. Ag+, Cu2+, Fe3+, Fe2+. Cu 236. Cho cc phn ng xy ra sau y: (1)AgNO3 + Fe(NO3)2 Fe(NO3)3 + Ag. (2)Mn + 2HCl MnCl2 + H2. Dy cc ion c sp xp theo chiu tng dn tnh oxi ho l A. Ag+, Fe3+, H+, Mn2+. B. Ag+, Mn2+, H+, Fe3+. C. Mn2+, H+, Ag+, Fe3+. D. Mn2+, H+, Fe3+, Ag+. Cu 237. Cho cc ion kim loi: Zn2+, Sn2+, Ni2+, Fe2+, Pb2+. Th t tnh oxi ho gim dn l A. Zn2+>Sn2+ > Ni2+ > Fe2+> Pb2+. B. Pb2+ > Sn2+ > Ni2+ > Fe2+> Zn2+. 2+ 2+ 2+ 2+ 2+ C. Pb > Sn > Fe > Ni > Zn . D. Sn2+ > Ni2+ > Zn2+> Pb2+ > Fe2+. Cu 238. Cho phn ng ha hc: Fe + CuSO4 FeSO4 + Cu. Trong phn ng trn xy ra. A. s oxi ha Fe v s kh Cu2+. B. s oxi ha Fe v s oxi ha Cu. C. s kh Fe2+ v s oxi ha Cu. D. s kh Fe2+ v s kh Cu2+. Cu 239. Hai kim loi X, Y v cc dung dch mui clorua ca chng c cc phn ng ha hc sau: X + 2YCl3 XCl2 + 2YCl2;. Y + XCl2 YCl2 + X. Pht biu ng l: A. Ion Y2+ c tnh oxi ha mnh hn ion X2+. B. Kim loi X kh c ion Y2+. C. Kim loi X c tnh kh mnh hn kim loi Y. D. Ion Y3+ c tnh oxi ha mnh hn ion X2+. Cu 240. Th t mt s cp oxi ho - kh trong dy in ho nh sau: Fe2+Fe; Cu2+/Cu; Fe3+/Fe2+. Cp cht khng phn ng vi nhau l A. Fe v dung dch CuCl2. B. dung dch FeCl2 v dung dch CuCl2. C. Cu v dung dch FeCl3. D. Fe v dung dch FeCl3. Cu 241. Cp cht khng xy ra phn ng ho hc l A. Cu + dung dch FeCl2. B. Fe + dung dch FeCl3. C. Cu + dung dch FeCl3. D. Fe + dung dch HCl. Cu 242. kh ion Fe3+ trong dung dch thnh ion Fe2+ c th dng mt lng d. A. kim loi Ag. B. kim loi Mg. C. kim loi Ba. D. kim loi Cu. Cu 243. Mnh khng ng l: A. Fe2+ oxi ho c Cu. B. Tnh oxi ha ca cc ion tng theo th t: Fe2+, H+, Cu2+, Ag+. C. Fe3+ c tnh oxi ha mnh hn Cu2+. D. Fe kh c Cu2+ trong dung dch. Cu 244. kh ion Cu2+ trong dung dch CuSO4 c th dng kim loi. A. Ba. B. K. C. Na. D. Fe. Cu 245. X l kim loi phn ng c vi dung dch H2SO4 long, Y l kim loi tc dng c vi dung dch Fe(NO3)3. Hai kim loi X, Y ln lt l (bit th t trong dy th in ho: Fe3+/Fe2+ ng trc Ag+/Ag). A. Ag, Mg. B. Fe, Cu. C. Cu, Fe. D. Mg, Ag. Cu 246. Th t mt s cp oxi ho - kh trong dy in ho nh sau: Mg2+/Mg; Fe2+/Fe; Cu2+/Cu; Fe3+/Fe2+; Ag+/Ag. Dy ch gm cc cht, ion tc dng c vi ion Fe3+ trong dung dch l: A. Fe, Cu, Ag+. B. Mg, Cu, Cu2+. C. Mg, Fe2+, Ag. D. Mg, Fe, Cu. Cu 247. Dy no sau y ch gm cc cht va tc dng c vi dung dch HCl, va tc dng c vi dung dch AgNO3?

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BA. Fe, Ni, Sn. B. Al, Fe, CuO. C. Hg, Na, Ca. D. Zn, Cu, Mg. Cu 248. Kim loi M phn ng c vi: dung dch HCl, dung dch Cu(NO3)2, dung dch HNO3 (c, ngui). Kim loi M l A. Zn. B. Fe. C. Ag. D. Al. - n mn in ha, pin in. Cu 249. Cho cc cp kim loi nguyn cht tip xc trc tip vi nhau: Fe v Pb; Fe v Zn; Fe v Sn; Fe v Ni. Khi nhng cc cp kim loi trn vo dung dch axit, s cp kim loi trong Fe b ph hu trc l A. 4. B. 2. C. 1. D. 3. Cu 250. Cho cc hp kim sau: Cu-Fe (I); Zn-Fe (II); Fe-C (III); Sn-Fe (IV). Khi tip xc vi dung dch cht in li th cc hp kim m trong Fe u b n mn trc l: A. I, II v III. B. I, III v IV. C. I, II v IV. D. II, III v IV. Cu 251. Bit rng ion Pb2+ trong dung dch oxi ha c Sn. Khi nhng hai thanh kim loi Pb v Sn c ni vi nhau bng dy dn in vo mt dung dch cht in li th. A. c Pb v Sn u b n mn in ho. B. ch c Pb b n mn in ho. C. c Pb v Sn u khng b n mn in ho. D. ch c Sn b n mn in ho. Cu 252. C 4 dung dch ring bit: a) HCl, b) CuCl2 , c) FeCl3, d) HCl c ln CuCl2. Nhng vo mi dung dch mt thanh Fe nguyn cht. S trng hp xut hin n mn in ho l A. 3. B. 2. C. 1. D. 0. Cu 253. Tin hnh bn th nghim sau: - Th nghim 1: Nhng thanh Fe vo dung dch FeCl3;. - Th nghim 2: Nhng thanh Fe vo dung dch CuSO4 ;. - Th nghim 3: Nhng thanh Cu vo dung dch FeCl3;. - Th nghim 4: Cho thanh Fe tip xc vi thanh Cu ri nhng vo dung dch HCl. S trng hp xut hin n mn in ho l A. 2. B. 1. C. 4. D. 3. Cu 254. Trong pin in ha Zn-Cu, qu trnh kh trong pin l A. Zn2 + 2e Zn. B. Cu Cu2+ + 2e. C. Cu2+ + 2e Cu. D. Zn Zn2+ + 2e. Cu 255. Cho bit phn ng oxi ho - kh xy ra trong pin in ho Fe - Cu l: Fe + Cu2+ Fe2+ + Cu ; E0 (Fe2+/Fe) = - 0,44 V, E0 (Cu2+/Cu) = + 0,34 V. Sut in ng chun ca pin in ho Fe - Cu l A. 0,10 V. B. 1,66 V. C. 0,78 V. D. 0,92 V. Cu 256. Cho sut in ng chun Eo ca cc pin in ho: Eo(Cu-X) = 0,46V; Eo(Y-Cu) = 1,1V; Eo(Z-Cu) = 0,47V (X, Y, Z l ba kim loi). Dy cc kim loi xp theo chiu tng dn tnh kh t tri sang phi l A. X, Cu, Z, Y. B. Z, Y, Cu, X. C. X, Cu, Y, Z. D. Y, Z, Cu, X. Cu 257. Cho cc th in cc chun:

E o 3+ /Al = -1,66V; E o 2+ / Zn = -0,76V; E o 2+ /Pb = -0,13V; E o 2+ /Cu = +0,34V. Trong cc pin sau Al Zn Pb CuC. Pin Zn - Cu. D. Pin Al - Zn.

y, pin no c sut in ng ln nht: A. Pin Pb - Cu. B. Pin Zn - Pb.

Cu 258. Cho sut in ng chun ca cc pin in ho: Zn-Cu l 1,1V; Cu-Ag l 0,46 V. Bit th in cc chun

E o 2+ /Zn v E o 2+ /Cu Zn Cu

c gi tr ln lt l: A. -1,46V v -0,34V. B. -0,76V v +0,34V. C. -1,56V v +0,64V. D. +1,56V v +0,64V. Cu 259. Mt pin in ho c in cc Zn nhng trong dung dch ZnSO4 v in cc Cu nhng trong dung dch CuSO4. Sau mt thi gian pin phng in th khi lng. A. c hai in cc Zn v Cu u tng. B. in cc Zn tng cn khi lng in cc Cu gim. C. in cc Zn gim cn khi lng in cc Cu tng. D. c hai in cc Zn v Cu u gim. - in phn, iu ch, tinh ch. Cu 260. Nguyn tc chung c dng iu ch kim loi l A. cho hp cht cha ion kim loi tc dng vi cht oxi ho. B. oxi ho ion kim loi trong hp cht thnh nguyn t kim loi. C. cho hp cht cha ion kim loi tc dng vi cht kh. D. kh ion kim loi trong hp cht thnh nguyn t kim loi. Cu 261. Dy gm cc kim loi c iu ch trong cng nghip bng phng php in phn hp cht nng chy ca chng, l: A. Fe, Ca, Al. B. Na, Ca, Zn. C. Na, Cu, Al. D. Na, Ca, Al. Cu 262. Hai kim loi c th c iu ch bng phng php in phn dung dch l A. Al v Mg. B. Mg v Zn. C. Na v Fe. D. Cu v Ag. Cu 263. Dy cc kim loi u c th c iu ch bng phng php in phn dung dch mui ca chng l: A. Mg, Zn, Cu. B. Ba, Ag, Au. C. Al, Fe, Cr. D. Fe, Cu, Ag. Cu 264. Khi in phn NaCl nng chy (in cc tr), ti catt xy ra. A. s oxi ho ion Na+. B. s oxi ho ion Cl-. C. s kh ion Cl-. D. s kh ion Na+. Cu 265. in phn nng chy Al2O3 vi anot than ch (hiu sut in phn 100%) thu c m kg Al catot v 67,2 m3 ( ktc) hn hp kh X c t khi so vi hiro bng 16. Ly 2,24 lt ( ktc) hn hp kh X sc vo dung dch nc vi trong (d) thu c 2 gam kt ta. Gi tr ca m l A. 67,5. B. 75,6. C. 54,0. D. 108,0.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 266. in phn dung dch cha a mol CuSO4 v b mol NaCl (vi in cc tr, c mng ngn). dung dch sau in phn lm phenolphtalein chuyn sang mu hng th iu kin ca a v b l A. b < 2a. B. 2b = a. C. b > 2a. D. b = 2a. Cu 267. in phn dung dch CuCl2 vi in cc tr, sau mt thi gian thu c 0,32 gam Cu catt v mt lng kh X ant. Hp th hon ton lng kh X trn vo 200 ml dung dch NaOH ( nhit thng). Sau phn ng, nng NaOH cn li l 0,05M (gi thit th tch dung dch khng thay i). Nng ban u ca dung dch NaOH l (cho Cu = 64). A. 0,15M. B. 0,05M. C. 0,1M. D. 0,2M. Cu 268. in phn c mng ngn 500 ml dung dch cha hn hp gm CuCl2 0,1M v NaCl 0,5M (in cc tr, hiu sut in phn 100%) vi cng dng in 5A trong 3860 giy. Dung dch thu c sau in phn c kh nng ho tan m gam Al. Gi tr ln nht ca m l A. 2,70. B. 5,40. C. 4,05. D. 1,35. - Kl tc dng axit HCl, H2SO4 long. Cu 269. Ha tan hon ton 3,22 gam hn hp X gm Fe, Mg v Zn bng mt lng va dung dch H2SO4 long, thu c 1,344 lt hiro (ktc) v dung dch cha m gam mui. Gi tr ca m l A. 10,27. B. 9,52. C. 7,25. D. 8,98. Cu 270. Cho 3,68 gam hn hp gm Al v Zn tc dng vi mt lng va dung dch H2SO4 10%, thu c 2,24 lt kh H2 ( ktc). Khi lng dung dch thu c sau phn ng l A. 101,48 gam. B. 101,68 gam. C. 97,80 gam. D. 88,20 gam. Cu 271. Ho tan ht 7,74 gam hn hp bt Mg, Al bng 500 ml dung dch hn hp HCl 1M v H2SO4 0,28M thu c dung dch X v 8,736 lt kh H2 (ktc). C cn dung dch X thu c lng mui khan l A. 103,85 gam. B. 25,95 gam. C. 77,86 gam. D. 38,93 gam. Cu 272. Cho 13,5 gam hn hp cc kim loi Al, Cr, Fe tc dng vi lng d dung dch H2SO4 long nng (trong iu kin khng c khng kh), thu c dung dch X v 7,84 lt kh H2 ( ktc).C cn dung dch X (trong iu kin khng c khng kh) c m gam mui khan. Gi tr ca m l A. 48,8. B. 42,6. C. 45,5. D. 47,1 Cu 273. Cho m gam hn hp Mg, Al vo 250 ml dung dch X cha hn hp axit HCl 1M v axit H2SO4 0,5M, thu c 5,32 lt H2 ( ktc) v dung dch Y (coi th tch dung dch khng i). Dung dch Y c pH l A. 7. B. 1. C. 2. D. 6. Cu 274. Cho 1,67 gam hn hp gm hai kim loi 2 chu k lin tip thuc nhm IIA tc dng ht vi dung dch HCl (d), thot ra 0,672 lt kh H2 ( ktc). Hai kim loi l A. Ca v Sr. B. Sr v Ba. C. Mg v Ca. D. Be v Mg. Cu 275. Cho m gam hn hp X gm Al, Cu vo dung dch HCl (d), sau khi kt thc phn ng sinh ra 3,36 lt kh ( ktc). Nu cho m gam hn hp X trn vo mt lng d axit nitric (c, ngui), sau khi kt thc phn ng sinh ra 6,72 lt kh NO2 (sn phm kh duy nht, ktc). Gi tr ca m l A. 15,6. B. 10,5. C. 12,3. D. 11,5. Cu 276. X l kim loi thuc phn nhm chnh nhm II (hay nhm IIA). Cho 1,7 gam hn hp gm kim loi X v Zn tc dng vi lng d dung dch HCl, sinh ra 0,672 lt kh H2 ( ktc). Mt khc, khi cho 1,9 gam X tc dng vi lng d dung dch H2SO4 long, th th tch kh hiro sinh ra cha n 1,12 lt ( ktc). Kim loi X l A. Ca. B. Sr. C. Mg. D. Ba. Cu 277. Ho tan hon ton hn hp X gm Fe v Mg bng mt lng va dung dch HCl 20%, thu c dung dch Y. Nng ca FeCl2 trong dung dch Y l 15,76%. Nng phn trm ca MgCl2 trong dung dch Y l A. 15,76%. B. 28,21%. C. 11,79%. D. 24,24%. - Kl tc dng HNO3, H2SO4 c. Cu 278. Cho hn hp Fe, Cu phn ng vi dung dch HNO3 long. Sau khi phn ng hon ton, thu c dung dch ch cha mt cht tan v kim loi d. Cht tan l A. Fe(NO3)3. B. HNO3. C. Fe(NO3)2. D. Cu(NO3)2. Cu 279. Cho hn hp X gm Mg v Fe vo dung dch axit H2SO4 c, nng n khi cc phn ng xy ra hon ton, thu c dung dch Y v mt phn Fe khng tan. Cht tan c trong dung dch Y l A. MgSO4, Fe2(SO4)3 v FeSO4. B. MgSO4. C. MgSO4 v FeSO4. D. MgSO4 v Fe2(SO4)3. Cu 280. Th tch dung dch HNO3 1M (long) t nht cn dng ho tan hon ton mt hn hp gm 0,15 mol Fe v 0,15 mol Cu l (bit phn ng to cht kh duy nht l NO). A. 0,6 lt. B. 1,0 lt. C. 0,8 lt. D. 1,2 lt. Cu 281. Cho 3,6 gam Mg tc dng ht vi dung dch HNO3 (d), sinh ra 2,24 lt kh X (sn phm kh duy nht, ktc). Kh X l A. N2O. B. N2. C. NO2. D. NO. Cu 282. Ha tan hon ton 12 gam hn hp Fe, Cu (t l mol 1:1) bng axit HNO3, thu c V lt (ktc) hn hp kh X (gm NO v NO2) v dung dch Y (ch cha hai mui v axit d). T khi ca X i vi H2 bng 19. Gi tr ca V l A. 5,60. B. 2,24. C. 4,48. D. 3,36. Cu 283. Ho tan hon ton 8,862 gam hn hp gm Al v Mg vo dung dch HNO3 long, thu c dung dch X v 3,136 lt ( ktc) hn hp Y gm hai kh khng mu, trong c mt kh ha nu trong khng kh. Khi lng ca Y l 5,18 gam. Cho dung dch NaOH (d) vo X v un nng, khng c kh mi khai thot ra. Phn trm khi lng ca Al trong hn hp ban u l A. 10,52%. B. 19,53%. C. 15,25%. D. 12,80%. Cu 284. Cho 6,72 gam Fe vo dung dch cha 0,3 mol H2SO4 c, nng (gi thit SO2 l sn phm kh duy nht). Sau khi phn ng xy ra hon ton, thu c. A. 0,02 mol Fe2(SO4)3 v 0,08 mol FeSO4. B. 0,05 mol Fe2(SO4)3 v 0,02 mol Fe d.

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G v :L Vn Hunh Trng THPT Giao Thu BC. 0,12 mol FeSO4. D. 0,03 mol Fe2(SO4)3 v 0,06 mol FeSO4. Cu 285. Cho 3,024 gam mt kim loi M tan ht trong dung dch HNO3 long, thu c 940,8 ml khNxOy (sn phm kh duy nht, ktc) c t khi i vi H2 bng 22. Kh NxOy v kim loi M l A. N2O v Al. B. N2O v Fe. C. NO v Mg. D. NO2 v Al. Este, lipit: 1 + 1. Cu 286. Mnh khng ng l: A. CH3CH2COOCH=CH2 tc dng vi dung dch NaOH thu c anehit v mui. B. CH3CH2COOCH=CH2 tc dng c vi dung dch Br2. C. CH3CH2COOCH=CH2 c th trng hp to polime. D. CH3CH2COOCH=CH2 cng dy ng ng vi CH2=CHCOOCH3. Cu 287. S ng phn este ng vi cng thc phn t C4H8O2 l A. 4. B. 6. C. 5. D. 2. Cu 288. S hp cht l ng phn cu to, c cng cng thc phn t C4H8O2, tc dng c vi dung dch NaOH nhng khng tc dng c vi Na l A. 1. B. 3. C. 4. D. 2. Cu 289. Pht biu ng l: A. Phn ng thy phn este trong mi trng axit l phn ng thun nghch. B. Phn ng gia axit v ru khi c H2SO4 c l phn ng mt chiu. C. Tt c cc este phn ng vi dung dch kim lun thu c sn phm cui cng l mui v (ancol). D. Khi thy phn cht bo lun thu c C2H4(OH)2. Cu 290. Pht biu no sau y sai? A. S nguyn t hiro trong phn t este n v a chc lun l mt s chn. B. Sn phm ca phn ng x phng ho cht bo l axit bo v glixerol. C. Nhit si ca este thp hn hn so vi ancol c cng phn t khi. D. Trong cng nghip c th chuyn ho cht bo lng thnh cht bo rn. Cu 291. Cho glixerin trioleat (hay triolein) ln lt vo mi ng nghim cha ring bit: Na, Cu(OH)2, CH3OH, dung dch Br2, dung dch NaOH. Trong iu kin thch hp, s phn ng xy ra l A. 5. B. 2. C. 4. D. 3. Cu 292. Hp cht hu c X tc dng c vi dung dch NaOH un nng v vi dung dch AgNO3 trong NH3. Th tch ca 3,7 gam hi cht X bng th tch ca 1,6 gam kh O2 (cng iu kin v nhit v p sut). Khi t chy hon ton 1 gam X th th tch kh CO2 thu c vt qu 0,7 lt ( ktc). Cng thc cu to ca X l A. HCOOC2H5. B. HOOC-CHO. C. CH3COOCH3. D. O=CH-CH2-CH2OH. Cu 293. Hai este n chc X v Y l ng phn ca nhau. Khi ho hi 1,85 gam X, thu c th tch hi ng bng th tch ca 0,7 gam N2 (o cng iu kin). Cng thc cu to thu gn ca X v Y l A. C2H5COOCH3 v HCOOCH(CH3)2. B. C2H3COOC2H5 v C2H5COOC2H3. C. HCOOCH2CH2CH3 v CH3COOC2H5. D. HCOOC2H5 v CH3COOCH3. Cu 294. Hn hp X gm hai este no, n chc, mch h. t chy hon ton mt lng X cn dng va 3,976 lt kh O2 ( ktc), thu c 6,38 gam CO2. Mt khc, X tc dng vi dung dch NaOH, thu c mt mui v hai ancol l ng ng k tip. Cng thc phn t ca hai este trong X l A. C2H4O2 v C3H6O2. B. C2H4O2 v C5H10O2. C. C3H6O2 v C4H8O2. D. C3H4O2 v C4H6O2. Cu 295. Khi t chy hon ton mt este no, n chc th s mol CO2 sinh ra bng s mol O2 phn ng. Tn gi ca este l A. metyl axetat. B. etyl axetat. C. metyl fomiat. D. n-propyl axetat. Cu 296. Este X c cc c im sau: - t chy hon ton X to thnh CO2 v H2O c s mol bng nhau;. - Thu phn X trong mi trng axit c cht Y (tham gia phn ng trng gng) v cht Z (c s nguyn t cacbon bng mt na s nguyn t cacbon trong X). Pht biu khng ng l: A. t chy hon ton 1 mol X sinh ra sn phm gm 2 mol CO2 v 2 mol H2O. B. Cht Y tan v hn trong nc. C. Cht X thuc loi este no, n chc. D. un Z vi dung dch H2SO4 c 170oC thu c anken. Cu 297. Mt este c cng thc phn t l C4H6O2, khi thu phn trong mi trng axit thu c axetanehit. Cng thc cu to thu gn ca este l A. HCOO-C(CH3)=CH2. B. HCOO-CH=CH-CH3. C. CH2=CH-COO-CH3. D. CH3COO-CH=CH2. Cu 298. Thy phn este c cng thc phn t C4H8O2 (vi xc tc axit), thu c 2 sn phm hu c X v Y. T X c th iu ch trc tip ra Y. Vy cht X l A. etyl axetat. B. axit fomic. C. ru etylic. D. ru metylic. Cu 299. X phng ho mt hp cht c cng thc phn t C10H14O6 trong dung dch NaOH (d), thu c glixerol v hn hp gm ba mui (khng c ng phn hnh hc). Cng thc ca ba mui l: A. HCOONa, CHC-COONa v CH3-CH2-COONa. B. CH2=CH-COONa, HCOONa v CHC-COONa. C. CH3-COONa, HCOONa v CH3-CH=CH-COONa. D. CH2=CH-COONa, CH3-CH2-COONa v HCOONa. Cu 300. Este X khng no, mch h, c t khi hi so vi oxi bng 3,125 v khi tham gia phn ng x phng ho to ra mt anehit v mt mui ca axit hu c. C bao nhiu cng thc cu to ph hp vi X? A. 5. B. 4. C. 2. D. 3.

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G v :L Vn Hunh Trng THPT Giao Thu BCu 301. Cho cht X tc dng vi mt lng va dung dch NaOH, sau c cn dung dch thu c cht rn Y v cht hu c Z. Cho Z tc dng vi AgNO3 (hoc Ag2O) trong dung dch NH3 thu c cht hu c T. Cho cht T tc dng vi dung dch NaOH li thu c cht Y. Cht X c th l A. CH3COOCH=CH-CH3. B. CH3COOCH=CH2. C. HCOOCH3. D. HCOOCH=CH2. Cu 302. Cht hu c X c cng thc phn t C5H8O2. Cho 5 gam X tc dng va ht vi dung dch NaOH, thu c mt hp cht hu c khng lm mt mu nc brom v 3,4 gam mt mui. Cng thc ca X l A. HCOOCH2CH=CHCH3. B. CH3COOC(CH3)=CH2. C. HCOOCH=CHCH2CH3. D. HCOOC(CH3)=CHCH3. Cu 303. Hai cht hu c X1 v X2 u c khi lng phn t bng 60 vC. X1 c kh nng phn ng vi: Na, NaOH, Na2CO3. X2 phn ng vi NaOH (un nng) nhng khng phn ng Na. Cng thc cu to ca X1, X2 ln lt l: A. CH3-COOH, H-COO-CH3. B. H-COO-CH3, CH3-COOH. C. CH3-COOH, CH3-COO-CH3. D. (CH3)2CH-OH, H-COO-CH3. Cu 304. Cht hu c X c cng thc phn t C4H6O4 tc dng vi dung dch NaOH (un nng) theo phng trnh phn ng: C4H6O4 + 2NaOH 2Z + Y. oxi ho ht a mol Y th cn va 2a mol CuO (un nng), sau phn ng to thnh a mol cht T (bit Y, Z, T l cc hp cht hu c). Khi lng phn t ca T l A. 118 vC. B. 58 vC. C. 82 vC. D. 44 vC. Cu 305. Cho m gam hn hp gm hai cht hu c n chc, mch h tc dng va vi dung dch cha 11,2 gam KOH, thu c mui ca mt axit cacboxylic v mt ancol X. Cho ton b X tc dng ht vi Na thu c 3,36 lt kh H2 ( ktc). Hai cht hu c l A. mt este v mt ancol. B. hai axit. C. hai este. D. mt este v mt axit. Cu 306. Mt hn hp X gm hai cht hu c n chc. Cho X phn ng va vi 500 ml dung dch KOH 1M. Sau phn ng, thu c hn hp Y gm hai mui ca hai axit cacboxylic v mt ru (ancol). Cho ton b lng ru thu c trn tc dng vi Na (d), sinh ra 3,36 lt H2 ( ktc). Hn hp X gm. A. mt axit v mt ru. B. mt axit v mt este. C. hai este. D. mt este v mt ru. Cu 307. Cho hn hp X gm hai hp cht hu c no, n chc tc dng va vi 100 ml dung dch KOH 0,4M, thu c mt mui v 336 ml hi mt ancol ( ktc). Nu t chy hon ton lng hn hp X trn, sau hp th ht sn phm chy vo bnh ng dung dch Ca(OH)2 (d) th khi lng bnh tng 6,82 gam. Cng thc ca hai hp cht hu c trong X l A. CH3COOH v CH3COOC2H5. B. HCOOH v HCOOC2H5. C. HCOOH v HCOOC3H7. D. C2H5COOH v C2H5COOCH3. Cu 308. X phng ho hon ton 22,2 gam hn hp gm hai este HCOOC2H5 v CH3COOCH3 bng dung dch NaOH 1M (un nng). Th tch dung dch NaOH ti thiu cn dng l A. 300 ml. B. 400 ml. C. 150 ml. D. 200 ml. Cu 309. X phng ha 8,8 gam etyl axetat bng 200 ml dung dch NaOH 0,2M. Sau khi phn ng xy ra hon ton, c cn dung dch thu c cht rn khan c khi lng l A. 10,4 gam. B. 3,28 gam. C. 8,2 gam. D. 8,56 gam. Cu 310. Este X (c khi lng phn t bng 103 vC) c iu ch t mt ancol n chc (c t khi hi so vi oxi ln hn 1) v mt amino axit. Cho 25,75 gam X phn ng ht vi 300 ml dung dch NaOH 1M, thu c dung dch Y. C cn Y thu c m gam cht rn. Gi tr m l A. 26,25. B. 24,25. C. 27,75. D. 29,75. Cu 311. X l mt este no n chc, c t khi hi i vi CH4 l 5,5. Nu em un 2,2 gam este X vi dung dch NaOH (d), thu c 2,05 gam mui. Cng thc cu to thu gn ca X l A. C2H5COOCH3. B. HCOOCH2CH2CH3. C. HCOOCH(CH3)2. D. CH3COOC2H5. Cu 312. Khi t chy hon ton 4,4 gam cht hu c X n chc thu c sn phm chy ch gm 4,48 lt CO2 ( ktc) v 3,6 gam nc. Nu cho 4,4 gam hp cht X tc dng vi dung dch NaOH va n khi phn ng hon ton, thu c 4,8 gam mui ca axit hu c Y v cht hu c Z. Tn ca X l A. etyl axetat. B. metyl propionat. C. etyl propionat. D. isopropyl axetat. Cu 313. Este n chc X c t khi hi so vi CH4 l 6,25. Cho 20 gam X tc dng vi 300 ml dung dch KOH 1M (un nng). C cn dung dch sau phn ng thu c 28 gam cht rn khan. Cng thc cu to ca X l A. CH2=CH-CH2-COO-CH3. B. CH3-CH2-COO-CH=CH2. C. CH2=CH-COO-CH2-CH3. D. CH3 -COO-CH=CH-CH3. Cu 314. Cho 20 gam mt este X (c phn t khi l 100 vC) tc dng vi 300 ml dung dch NaOH 1M. Sau phn ng, c cn dung dch thu c 23,2 gam cht rn khan. Cng thc cu to ca X l A. CH3COOCH=CHCH3. B. CH2=CHCOOC2H5. C. CH2=CHCH2COOCH3. D. C2H5COOCH=CH2. Cu 315. Hp cht hu c no, a chc X c cng thc phn t C7H12O4. Cho 0,1 mol X tc dng va vi 100 gam dung dch NaOH 8% thu c cht hu c Y v 17,8 gam hn hp mui. Cng thc cu to thu gn ca X l A. CH3COO-(CH2)2-OOCC2H5. B. CH3OOC-(CH2)2-COOC2H5. C. CH3COO-(CH2)2COOC2H5. D. CH3OOC-CH2-COO-C3H7. Cu 316. X phng ho hon ton 17,24 gam cht bo cn va 0,06 mol NaOH. C cn dung dch sau phn ng thu c khi lng x phng l A. 17,80 gam. B. 18,38 gam. C. 18,24 gam. D. 16,68 gam. Cu 317. X phng ho hon ton 1,99 gam hn hp hai este bng dung dch NaOH thu c 2,05 gam mui ca mt axit cacboxylic v 0,94 gam hn hp hai ancol l ng ng k tip nhau. Cng thc ca hai este l A. C2H5COOCH3 v C2H5COOC2H5. B. CH3COOC2H5 v CH3COOC3H7. C. HCOOCH3 v HCOOC2H5. D. CH3COOCH3 v CH3COOC2H5. Cu 318. Thu phn hon ton 444 gam mt lipit thu c 46 gam glixerol (glixerin) v hai loi axit bo. Hai loi axit bo l A. C17H31COOH v C17H33COOH. B. C15H31COOH v C17H35COOH. C. C17H33COOH v C17H35COOH. D. C17H33COOH v C15H31COOH.

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G v :L Vn Hunh Trng THPT Giao Thu B- Phn ng este ha. Cu 319. Cho glixerol (glixerin) phn ng vi hn hp axit bo gm C17H35COOH v C15H31COOH, s loi trieste c to ra ti a l A. 4. B. 3. C. 6. D. 5. Cu 320. un nng 6,0 gam CH3COOH vi 6,0 gam C2H5OH (c H2SO4 lm xc tc, hiu sut phn ng este ho bng 50%). Khi lng este to thnh l A. 8,8 gam. B. 6,0 gam. C. 5,2 gam. D. 4,4 gam. Cu 321. Hn hp X gm axit HCOOH v axit CH3COOH (t l mol 1:1). Ly 5,3 gam hn hp X tc dng vi 5,75 gam C2H5OH (c xc tc H2SO4 c) thu c m gam hn hp este (hiu sut ca cc phn ng este ho u bng 80%). Gi tr ca m l A. 10,12. B. 16,20. C. 8,10. D. 6,48. Cu 322. un 12 gam axit axetic vi 13,8 gam etanol (c H2SO4 c lm xc tc) n khi phn ng t ti trng thi cn bng, thu c 11 gam este. Hiu sut ca phn ng este ho l A. 55%. B. 75%. C. 50%. D. 62,5%. Cu 323. Khi thc hin phn ng este ho 1 mol CH3COOH v 1 mol C2H5OH, lng este ln nht thu c l 2/3 mol. t hiu sut cc i l 90% (tnh theo axit) khi tin hnh este ho 1 mol CH3COOH cn s mol C2H5OH l (bit cc phn ng este ho thc hin cng nhit ). A. 0,342. B. 2,412. C. 2,925. D. 0,456. Cu 324. trung ho lng axit t do c trong 14 gam mt mu cht bo cn 15ml dung dch KOH 0,1M. Ch s axit ca mu cht bo trn l A. 5,5. B. 6,0. C. 7,2. D. 4,8. Amin, amino axit v protein: 3 + 1. Cu 325. Mt trong nhng im khc nhau ca protit so vi lipit v glucoz l A. protit lun cha chc hiroxyl. B. protit lun cha nit. C. protit lun l cht hu c no. D. protit c khi lng phn t ln hn. Cu 326. Pht biu khng ng l: A. Hp cht H2N-CH2-COOH3N-CH3 l este ca glyxin (hay glixin). B. Trong dung dch, H2N-CH2-COOH cn tn ti dng ion lng cc H3N+-CH2-COO-. C. Aminoaxit l nhng cht rn, kt tinh, tan tt trong nc v c v ngt. D. Aminoaxit l hp cht hu c tp chc, phn t cha ng thi nhm amino v nhm cacboxyl. Cu 327. C cc dung dch ring bit sau: C6H5NH3Cl (phenylamoni clorua), NH2 - CH2 - CH2 - CH(NH2) - COOH, ClNH3 - CH2 COOH, HOOC - CH2 - CH2 - CH(NH2) - COOH, NH2 - CH2 - COONa. S lng cc dung dch c pH < 7 l A. 3. B. 5. C. 4. D. 2. Cu 328. un nng cht H2N-CH2-CONH-CH(CH3)-CONH-CH2-COOH trong dung dch HCl (d), sau khi cc phn ng kt thc thu c sn phm l: A. H2N-CH2-COOH, H2N-CH2-CH2-COOH. B. H2N-CH2-COOH, H2N-CH(CH3)-COOH. C. H3N+-CH2-COOHCl-, H3N+-CH2-CH2-COOHCl-. D. H3N+-CH2-COOHCl-, H3N+-CH(CH3)-COOHCl-. Cu 329. S ng phn cu to ca amin bc mt c cng cng thc phn t C4H11N l A. 2. B. 4. C. 5. D. 3. Cu 330. S ipeptit ti a c th to ra t mt hn hp gm alanin v glyxin l A. 1. B. 2. C. 3. D. 4. Cu 331. Thuc th c dng phn bit Gly-Ala-Gly vi Gly-Ala l A. Cu(OH)2 trong mi trng kim. B. dung dch NaOH. C. dung dch HCl. D. dung dch NaCl. Cu 332. Cht X c cng thc phn t C3H7O2N v lm mt mu dung dch brom. Tn gi ca X l A. amoni acrylat. B. axit aminopropionic. C. axit -aminopropionic. D. metyl aminoaxetat. Cu 333. Cht X c cng thc phn t C4H9O2N. Bit: X + NaOH Y + CH4O. Y + HCl (d) Z + NaCl. Cng thc cu to ca X v Z ln lt l A. H2NCH2CH2COOCH3 v CH3CH(NH3Cl)COOH. B. H2NCH2COOC2H5 v ClH3NCH2COOH. C. CH3CH(NH2)COOCH3 v CH3CH(NH2)COOH. D. CH3CH(NH2)COOCH3 v CH3CH(NH3Cl)COOH. Cu 334. Cho s phn ng: NH 3+ CH 3I + HONO + CuO X Y Z . (1:1) to

Bit Z c kh nng tham gia phn ng trng gng. Hai cht Y v Z ln lt l: A. C2H5OH, CH3CHO. B. CH3OH, HCOOH. C. C2H5OH, HCHO. D. CH3OH, HCHO. Cu 335. Khi t chy hon ton mt amin n chc X, thu c 8,4 lt kh CO2, 1,4 lt kh N2 (cc th tch kh o ktc) v 10,125 gam H2O. Cng thc phn t ca X l A. C3H9N. B. C4H9N. C. C3H7N. D. C2H7N. Cu 336. t chy hon ton mt lng cht hu c X thu c 3,36 lt kh CO2, 0,56 lt kh N2 (cc kh o ktc) v 3,15 gam H2O. Khi X tc dng vi dung dch NaOH thu c sn phm c mui H2N-CH2-COONa. Cng thc cu to thu gn ca X l A. H2N-CH2-CH2-COOH. B. H2N-CH2-COO-CH3. C. H2N-CH2-COO-C2H5. D. H2N-CH2-COO-C3H7. Cu 337. Cho cc loi hp cht: aminoaxit (X), mui amoni ca axit cacboxylic (Y), amin (Z), este caaminoaxit (T). Dy gm cc loi hp cht u tc dng c vi dung dch NaOH v u tc dng c vi dung dch HCl l A. X, Y, Z. B. Y, Z, T. C. X, Y, Z, T. D. X, Y, T.

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G v :L Vn Hunh Trng THPT Giao Thu BCu 338. -aminoaxit X cha mt nhm -NH2. Cho 10,3 gam X tc dng vi axit HCl (d), thu c 13,95 gam mui khan. Cng thc cu to thu gn ca X l A. CH3CH2CH(NH2)COOH. B. H2NCH2COOH. C. CH3CH(NH2)COOH. D. H2NCH2CH2COOH. Cu 339. Cho 10 gam amin n chc X phn ng hon ton vi HCl (d), thu c 15 gam mui. S ng phn cu to ca X l A. 5. B. 7. C. 8. D. 4. Cu 340. Cho 5,9 gam amin n chc X tc dng va vi dung dch HCl, sau khi phn ng xy ra hon ton thu c dung dch Y. Lm bay hi dung dch Y c 9,55 gam mui khan. S cng thc cu to ng vi cng thc phn t ca X l A. 2. B. 3. C. 5. D. 4. Cu 341. Cho 1 mol amino axit X phn ng vi dung dch HCl (d), thu c m1 gam mui Y. Cng 1 mol amino axit X phn ng vi dung dch NaOH (d), thu c m2 gam mui Z. Bit m2 - m1 = 7,5. Cng thc phn t ca X l A. C4H8O4N2. B. C4H10O2N2. C. C5H11O2N. D. C5H9O4N. Cu 342. trung ha 25 gam dung dch ca mt amin n chc X nng 12,4% cn dng 100ml dung dch HCl 1M. Cng thc phn t ca X l A. C2H7N. B. CH5N. C. C3H7N. D. C3H5N. Cu 343. Trong phn t aminoaxit X c mt nhm amino v mt nhm cacboxyl. Cho 15,0 gam X tc dng va vi dung dch NaOH, c cn dung dch sau phn ng thu c 19,4 gam mui khan. Cng thc ca X l A. H2NC3H6COOH. B. H2NC2H4COOH. C. H2NCH2COOH. D. H2NC4H8COOH. Cu 344. Cho 0,02 mol amino axit X tc dng va vi 200 ml dung dch HCl 0,1M thu c 3,67 gam mui khan. Mt khc 0,02 mol X tc dng va vi 40 gam dung dch NaOH 4%. Cng thc ca X l A. H2NC3H5(COOH)2. B. H2NC2H3(COOH)2. C. (H2N)2C3H5COOH. D. H2NC3H6COOH. Cu 345. Hp cht X c cng thc phn t trng vi cng thc n gin nht, va tc dng c vi axit va tc dng c vi kim trong iu kin thch hp. Trong phn t X, thnh phn phn trm khi lng ca cc nguyn t C, H, N ln lt bng 40,449%; 7,865% v 15,73%; cn li l oxi. Khi cho 4,45 gam X phn ng hon ton vi mt lng va dung dch NaOH (un nng) thu c 4,85 gam mui khan. Cng thc cu to thu gn ca X l A. H2NCH2COO-CH3. B. H2NC2H4COOH. C. CH2=CHCOONH4. D. H2NCOO-CH2CH3. Cu 346. Cho 8,9 gam mt hp cht hu c X c cng thc phn t C3H7O2N phn ng vi 100 ml dung dch NaOH 1,5M. Sau khi phn ng xy ra hon ton, c cn dung dch thu c 11,7 gam cht rn. Cng thc cu to thu gn ca X l A. H2NCH2COOCH3. B. HCOOH3NCH=CH2. C. H2NCH2CH2COOH. D. CH2=CHCOONH4. Cu 347. Cho 1,82 gam hp cht hu c n chc, mch h X c cng thc phn t C3H9O2N tc dng va vi dung dch NaOH, un nng thu c kh Y v dung dch Z. C cn Z thu c 1,64 gam mui khan. Cng thc cu to thu gn ca X l A. HCOONH2(CH3)2. B. HCOONH3CH2CH3. C. CH3COONH3CH3. D. CH3CH2COONH4. Cu 348. Cho hn hp X gm hai cht hu c c cng cng thc phn t C2H7NO2 tc dng va vi dung dch NaOH v un nng, thu c dung dch Y v 4,48 lt hn hp Z ( ktc) gm hai kh (u lm xanh giy qu m). T khi hi ca Z i vi H2 bng 13,75. C cn dung dch Y thu c khi lng mui khan l A. 16,5 gam. B. 8,9 gam. C. 14,3 gam. D. 15,7 gam. Cu 349. Hp cht X mch h c cng thc phn t l C4H9NO2. Cho 10,3 gam X phn ng va vi dung dch NaOH sinh ra mt cht kh Y v dung dch Z. Kh Y nng hn khng kh, lm giy qu tm m chuyn mu xanh. Dung dch Z c kh nng lm mt mu nc brom. C cn dung dch Z thu c m gam mui khan. Gi tr ca m l A. 9,6. B. 9,4. C. 8,2. D. 10,8. Cu 350. Cho cht hu c X c cng thc phn t C2H8O3N2 tc dng vi dung dch NaOH, thu c cht hu c n chc Y v cc cht v c. Khi lng phn t (theo vC) ca Y l A. 45. B. 68. C. 85. D. 46. Cu 351. Cho hai hp cht hu c X, Y c cng cng thc phn t l C3H7NO2. Khi phn ng vi dung dch NaOH, X to ra H2NCH2COONa v cht hu c Z; cn Y to ra CH2=CHCOONa v kh T. Cc cht Z v T ln lt l A. CH3NH2 v NH3. B. CH3OH v CH3NH2. C. CH3OH v NH3. D. C2H5OH v N2. Cu 352. Ngi ta iu ch anilin bng s sau:+ HNO3 c Fe + HCl Benzen Nitrobenzen Anilin . H 2SO4 c to

Bit hiu sut giai on to thnh nitrobenzen t 60% v hiu sut giai on to thnh anilin t 50%. Khi lng anilin thu c khi iu ch t 156 gam benzen l A. 186,0 gam. B. 111,6 gam. C. 93,0 gam. D. 55,8 gam. Cu 353. Mui C6H5N2+Cl- (phenyliazoni clorua) c sinh ra khi cho C6H5-NH2 (anilin) tc dng vi NaNO2 trong dung dch HCl nhit thp (0-5oC). iu ch c 14,05 gam C6H5N2+Cl- (vi hiu sut 100%), lng C6H5-NH2 v NaNO2 cn dng va l A. 0,1 mol v 0,3 mol. B. 0,1 mol v 0,4 mol. C. 0,1 mol v 0,1 mol. D. 0,1 mol v 0,2 mol. Cacbohirat: 1 + 1. Cu 354. chng minh trong phn t ca glucoz c nhiu nhm hiroxyl, ngi ta cho dung dch glucoz phn ng vi. A. kim loi Na. B. Cu(OH)2 nhit thng. C. Cu(OH)2 trong NaOH, un nng. D. AgNO3 (hoc Ag2O) trong dung dch NH3, un nng. Cu 355. Cacbohirat nht thit phi cha nhm chc ca. A. anehit. B. ancol. C. xeton. D. amin. Cu 356. Cho mt s tnh cht: c dng si (1); tan trong nc (2); tan trong nc Svayde (3); phn ng vi axit nitric c (xc tc axit sunfuric c) (4); tham gia phn ng trng bc (5); b thu phn trong dung dch axit un nng (6). Cc tnh cht ca xenluloz l: A. (1), (3), (4) v (6). B. (2), (3), (4) v (5). C. (3), (4), (5) v (6). D. (1), (2), (3) v (4). Cu 357. Pht biu khng ng l

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BA. Dung dch fructoz ho tan c Cu(OH)2. B. Dung dch mantoz tc dng vi Cu(OH)2 khi un nng cho kt ta Cu2O. C. Thy phn (xc tc H+, to) saccaroz cng nh mantoz u cho cng mt monosaccarit. D. Sn phm thy phn xenluloz (xc tc H+, to) c th tham gia phn ng trng gng. Cu 358. Pht biu no sau y khng ng? A. Glucoz tc dng c vi nc brom. B. Glucoz tn ti dng mch h v dng mch vng. C. dng mch h, glucoz c 5 nhm OH k nhau. D. Khi glucoz dng vng th tt c cc nhm OH u to ete vi CH3OH. Cu 359. Pht biu no sau y l ng? A. Glucoz b kh bi dung dch AgNO3 trong NH3. B. Xenluloz c cu trc mch phn nhnh. C. Amilopectin c cu trc mch phn nhnh. D. Saccaroz lm mt mu nc brom. Cu 360. Tinh bt, xenluloz, saccaroz, mantoz u c kh nng tham gia phn ng. A. trng gng. B. ho tan Cu(OH)2. C. thy phn. D. trng ngng. Cu 361. Gluxit (cacbohirat) ch cha hai gc glucoz trong phn t l A. mantoz. B. xenluloz. C. tinh bt. D. saccaroz. Cu 362. Cho dy cc cht: glucoz, xenluloz, saccaroz, tinh bt, mantoz. S cht trong dy tham gia phn ng trng gng l A. 4. B. 3. C. 2. D. 5. Cu 363. Cho 50ml dung dch glucoz cha r nng tc dng vi mt lng d AgNO3 trong dung dch NH3 thu c 2,16 gam Ag kt ta. Nng mol/l ca dung dch glucoz dng l A. 0,10M. B. 0,02M. C. 0,20M. D. 0,01M. Cu 364. Lng glucoz cn dng to ra 1,82 gam sobitol vi hiu sut 80% l A. 1,80 gam. B. 2,25 gam. C. 1,44 gam. D. 1,82 gam. Cu 365. Cho s chuyn ho: Glucoz X Y CH3COOH. Hai cht X, Y ln lt l A. CH3CHO v CH3CH2OH. B. CH3CH(OH)COOH v CH3CHO. C. CH3CH2OH v CH3CHO. D. CH3CH2OH v CH2=CH2. Cu 366. Khi lng ca tinh bt cn dng trong qu trnh ln men to thnh 5 lt ru (ancol) etylic 46 l (bit hiu sut ca c qu trnh l 72% v khi lng ring ca ru etylic nguyn cht l 0,8 g/ml). A. 5,0 kg. B. 6,0 kg. C. 4,5 kg. D. 5,4 kg. Cu 367. Ln men hon ton m gam glucoz thnh ancol etylic. Ton b kh CO2 sinh ra trong qu trnh ny c hp th ht vo dung dch Ca(OH)2 (d) to ra 40 gam kt ta. Nu hiu sut ca qu trnh ln men l 75% th gi tr ca m l A. 58. B. 30. C. 60. D. 48. Cu 368. Cho m gam tinh bt ln men thnh ancol (ru) etylic vi hiu sut 81%. Ton b lng CO2 sinh ra c hp th hon ton vo dung dch Ca(OH)2, thu c 550 gam kt ta v dung dch X. un k dung dch X thu thm c 100 gam kt ta. Gi tr ca m l A. 550. B. 650. C. 750. D. 810. Cu 369. Ln men m gam glucoz vi hiu sut 90%, lng kh CO2 sinh ra hp th ht vo dung dch nc vi trong, thu c 10 gam kt ta. Khi lng dung dch sau phn ng gim 3,4 gam so vi khi lng dung dch nc vi trong ban u. Gi tr ca m l A. 30,0. B. 20,0. C. 13,5. D. 15,0. Cu 370. T 16,20 tn xenluloz ngi ta sn xut c m tn xenluloz trinitrat (bit hiu sut phn ng tnh theo xenluloz l 90%). Gi tr ca m l A. 25,46. B. 33,00. C. 26,73. D. 29,70. Cu 371. Th tch ca dung dch axit nitric 63% (D = 1,4 g/ml) cn va sn xut c 59,4 kg xenluloz trinitrat (hiu sut 80%) l A. 53,57 lt. B. 42,86 lt. C. 42,34 lt. D. 34,29 lt. Cu 372. Xenluloz trinitrat c iu ch t xenluloz v axit nitric c c xc tc axit sunfuric c, nng. c 29,7 kg xenluloz trinitrat, cn dng dung dch cha m kg axit nitric (hiu sut phn ng t 90%). Gi tr ca m l A. 21 kg. B. 30 kg. C. 42 kg. D. 10 kg. Cu 373. Th tch dung dch HNO3 67,5% (khi lng ring l 1,5 g/ml) cn dng tc dng vi xenluloz to thnh 89,1 kg xenluloz trinitrat l (bit lng HNO3 b hao ht l 20 %). A. 55 lt. B. 81 lt. C. 70 lt. D. 49 lt. Polime v vt liu polime: 1. Cu 374. Dy gm cc cht u c kh nng tham gia phn ng trng hp l: A. buta-1,3-ien; cumen; etilen; trans-but-2-en. B. stiren; clobenzen; isopren; but-1-en. C. 1,2-iclopropan; vinylaxetilen; vinylbenzen; toluen. D. 1,1,2,2-tetrafloeten; propilen; stiren; vinyl clorua. Cu 375. Pht biu no sau y l ng? A. Trng hp stiren thu c poli(phenol-fomanehit). B. Poli(etylen terephtalat) c iu ch bng phn ng trng ngng cc monome tng ng. C. Trng ngng buta-1,3-ien vi acrilonitrin c xc tc Na c cao su buna-N. D. T visco l t tng hp. Cu 376. Nilon-6,6 l mt loi. A. t axetat. B. t visco. C. t poliamit. D. polieste. Cu 377. Dy gm cc cht c dng tng hp cao su Buna-S l: A. CH2=CH-CH=CH2, lu hunh. B. CH2=C(CH3)-CH=CH2, C6H5CH=CH2. C. CH2=CH-CH=CH2, C6H5CH=CH2. D. CH2=CH-CH=CH2, CH3-CH=CH2.

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BCu 378. Polivinyl axetat (hoc poli(vinyl axetat)) l polime c iu ch bng phn ng trng hp. A. CH3COO-CH=CH2. B. C2H5COO-CH=CH2. C. CH2=CH-COO-C2H5. D. CH2=CH-COO-CH3. Cu 379. Polime dng ch to thu tinh hu c (plexiglas) c iu ch bng phn ng trng hp. A. CH3COOCH=CH2. B. CH2=C(CH3)COOCH3. C. C6H5CH=CH2. D. CH2 =CHCOOCH3. Cu 380. Trong s cc loi t sau: t tm, t visco, t nilon-6,6, t axetat, t capron, t enang, nhng loi t no thuc loi t nhn to? A. T visco v t axetat. B. T tm v t enang. C. T visco v t nilon-6,6. D. T nilon-6,6 v t capron. Cu 381. Polime c cu trc mng khng gian (mng li) l A. PVC. B. PE. C. nha bakelit. D. amilopectin. Cu 382. Poli(metyl metacrylat) v nilon-6 c to thnh t cc monome tng ng l A. CH2=C(CH3)-COOCH3 v H2N-[CH2]5-COOH. B. CH2=CH-COOCH3 v H2N-[CH2]6-COOH. C. CH2=C(CH3)-COOCH3 v H2N-[CH2]6-COOH. D. CH3-COO-CH=CH2 v H2N-[CH2]5-COOH. Cu 383. T nilon - 6,6 c iu ch bng phn ng trng ngng. A. HOOC-(CH2)2-CH(NH2)-COOH. B. HOOC-(CH2)4-COOH v H2N-(CH2)6-NH2. C. H2N-(CH2)5-COOH. D. HOOC-(CH2)4-COOH v HO-(CH2)2-OH. Cu 384. Thu phn 1250 gam protein X thu c 425 gam alanin. Nu phn t khi ca X bng 100.000 vC th s mt xch alanin c trong phn t X l A. 328. B. 382. C. 453. D. 479. Cu 385. Clo ho PVC thu c mt polime cha 63,96% clo v khi lng, trung bnh 1 phn t clo phn ng vi k mt xch trong mch PVC. Gi tr ca k l A. 4. B. 6. C. 5. D. 3. Cu 386. Khi lng ca mt on mch t nilon-6,6 l 27346 vC v ca mt on mch t capron l 17176 vC. S lng mt xch trong on mch nilon-6,6 v capron nu trn ln lt l A. 121 v 114. B. 113 v 114. C. 113 v 152. D. 121 v 152. Cu 387. Cho s chuyn ha: CH4 C2H2 C2H3Cl PVC. tng hp 250 kg PVC theo s trn th cn V m3 kh thin nhin ( ktc). Gi tr ca V l (bit CH4 chim 80% th tch kh thin nhin v hiu sut ca c qu trnh l 50%). A. 286,7. B. 448,0. C. 358,4. D. 224,0. Tng hp ni dung cc kin thc ha hu c thuc chng trnh ph thng: 6. Cu 388. Dy gm cc cht u tc dng vi AgNO3 (hoc Ag2O) trong dung dch NH3, l: A. anehit axetic, butin-1, etilen. B. anehit fomic, axetilen, etilen. C. axit fomic, vinylaxetilen, propin. D. anehit axetic, axetilen, butin-2. Cu 389. Dy gm cc dung dch u tham gia phn ng trng bc l: A. Fructoz, mantoz, glixerol, anehit axetic. B. Glucoz, mantoz, axit fomic, anehit axetic. C. Glucoz, glixerol, mantoz, axit fomic. D. Glucoz, fructoz, mantoz, saccaroz. Cu 390. Cho tt c cc ng phn n chc, mch h, c cng cng thc phn t C2H4O2 ln lt tc dng vi: Na, NaOH, NaHCO3. S phn ng xy ra l A. 3. B. 2. C. 5. D. 4. Cu 391. Cho dy cc cht: phenol, anilin, phenylamoni clorua, natri phenolat, etanol. S cht trong dy phn ng c vi NaOH (trong dung dch) l A. 1. B. 3. C. 2. D. 4. Cu 392. Cho dy cc cht: C6H5OH (phenol), C6H5NH2 (anilin), H2NCH2COOH, CH3CH2COOH, CH3CH2CH2NH2. S cht trong dy tc dng c vi dung dch HCl l A. 4. B. 3. C. 2. D. 5. Cu 393. Cho dy cc cht: C2H2, HCHO, HCOOH, CH3CHO, (CH3)2CO, C12H22O11 (mantoz). S cht trong dy tham gia c phn ng trng gng l A. 5. B. 4. C. 6. D. 3. Cu 394. Cho dy cc cht: CH4, C2H2, C2H4, C2H5OH, CH2=CH-COOH, C6H5NH2 (anilin), C6H5OH (phenol), C6H6 (benzen). S cht trong dy phn ng c vi nc brom l A. 6. B. 8. C. 5. D. 7. Cu 395. Cho cc cht: ru (ancol) etylic, glixerin (glixerol), glucoz, imetyl ete v axit fomic. S cht tc dng c vi Cu(OH)2 l A. 1. B. 4. C. 2. D. 3. Cu 396. Cht phn ng vi dung dch FeCl3 cho kt ta l A. CH3NH2. B. CH3COOH. C. CH3OH. D. CH3COOCH3. Cu 397. S hp cht n chc, ng phn cu to ca nhau c cng cng thc phn t C4H8O2, u tc dng c vi dung dch NaOH l A. 5. B. 6. C. 3. D. 4. Cu 398. Cho cc hp cht hu c: C2H2; C2H4; CH2O; CH2O2 (mch h); C3H4O2 (mch h, n chc). Bit C3H4O2 khng lm chuyn mu qu tm m. S cht tc dng c vi dung dch AgNO3 trong NH3 to ra kt ta l A. 2. B. 4. C. 5. D. 3. Cu 399. Cho cc cht sau: phenol, etanol, axit axetic, natri phenolat, natri hiroxit. S cp cht tc dng c vi nhau l A. 1. B. 4. C. 2. D. 3. Cu 400. Cho cc cht: etyl axetat, anilin, ancol (ru) etylic, axit acrylic, phenol, phenylamoni clorua, ancol (ru) benzylic, p-crezol. Trong cc cht ny, s cht tc dng c vi dung dch NaOH l A. 3. B. 5. C. 4. D. 6. Cu 401. Cho tng cht H2NCH2COOH, CH3COOH, CH3COOCH3 ln lt tc dng vi dung dch NaOH (to) v vi dung dch HCl (to). S phn ng xy ra l

GIO N LUYN THI

G v :L Vn Hunh Trng THPT Giao Thu BA. 5. B. 6. C. 3. D. 4. Cu 402. Cho cc cht sau: CH3-CH2-CHO (1), CH2=CH-CHO (2), (CH3)2CH-CHO (3), CH2=CH-CH2-OH (4). Nhng cht phn ng hon ton vi lng d H2 (Ni, to) cng to ra mt sn phm l: A. (1), (3), (4). B. (2), (3), (4). C. (1), (2), (3). D. (1), (2), (4). Cu 403. Cho cc cht HCl (X); C2H5OH (Y); CH3COOH (Z); C6H5OH (phenol) (T). Dy gm cc cht c sp xp theo tnh axit tng dn (t tri sang phi) l: A. (T), (Y), (X), (Z). B. (X), (Z), (T), (Y). C. (Y), (T), (X), (Z). D. (Y), (T), (Z), (X). Cu 404. Cho cc cht: axit propionic (X), axit axetic (Y), ancol (ru) etylic (Z) v imetyl ete (T). Dy gm cc cht c sp xp theo chiu tng dn nhit si l A. T, Z, Y, X. B. Z, T, Y, X. C. T, X, Y, Z. D. Y, T, X, Z. Cu 405. Dy gm cc cht c xp theo chiu nhit si tng dn t tri sang phi l: A. CH3CHO, C2H5OH, C2H6, CH3COOH. B. C2H6, C2H5OH, CH3CHO, CH3COOH. C. C2H6, CH3CHO, C2H5OH, CH3COOH. D. CH3COOH, C2H6, CH3CHO, C2H5OH. Cu 406. Dy gm cc cht c sp xp theo chiu tng dn nhit si t tri sang phi l: A. CH3COOH, HCOOH, C2H5OH, CH3CHO. B. HCOOH, CH3COOH, C2H5OH, CH3CHO. C. CH3COOH, C2H5OH, HCOOH, CH3CHO. D. CH3CHO, C2H5OH, HCOOH, CH3COOH. Cu 407. Dy gm cc cht u lm giy qu tm m chuyn sang mu xanh l: A. amoni clorua, metyl amin, natri hiroxit. B. metyl amin, amoniac, natri axetat. C. anilin, amoniac, natri hiroxit. D. anilin, metyl amin, amoniac. Cu 408. C 3 cht lng benzen, anilin, stiren, ng ring bit trong 3 l mt nhn. Thuc th phn bit 3 cht lng trn l A. dung dch NaOH. B. dung dch phenolphtalein. C. giy qu tm. D. nc brom. Cu 409. Ch dng Cu(OH)2 c th phn bit c tt c cc dung dch ring bit sau: A. lng trng trng, glucoz, fructoz, glixerin (glixerol). B. saccaroz, glixerin (glixerol), anehit axetic, ru (ancol) etylic. C. glucoz, mantoz, glixerin (glixerol), anehit axetic. D. glucoz, lng trng trng, glixerin (glixerol), ru (ancol) etylic. Cu 410. C ba dung dch: amoni hirocacbonat, natri aluminat, natri phenolat v ba cht lng: ancol etylic, benzen, anilin ng trong su ng nghim ring bit. Nu ch dng mt thuc th duy nht l dung dch HCl th nhn bit c ti a bao nhiu ng nghim? A. 6. B. 4. C. 5. D. 3. Cu 411. Pht biu ng l: A. Tnh axit ca phenol yu hn ca ru (ancol). B. Tnh baz ca anilin mnh hn ca amoniac. C. Cc cht

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