Thi Th Ha i Cng

1. X l mt nguyn t ha hc m in t cui ca n c cc s lng t nh sau: n = 4, l = 1, m = 0, ms = +1/2 S th t ca X l: A. 31. B. 33. C. 32. D. 35 2. Trong cc b s lng t sau: 1) n = 1; l = 0; m = -1; ms = +1/2 2) n = 6; l = 5; m = 0; ms = -1/2 3) n = 5; l = 3; m = 0; ms = -1/2 4) n = 0; l = 0; m = 0; ms = +1/2 5) n = 4; l = 2; m = -2; ms = +1 6) n = 10 ; l = 8; m = -8; ms = -1/2 Cc b s lng t khng ph hp l: A. (1), (2), (6) B. (1), (4), (5), (6) C. (4), (5), (6) D. (1), (4), (5) 3. Chon trng hp ung: Trong cac cau hnh electron sau, nhng cau hnh nao tuan theo cac nguyen tac ngoai tr va vng ben cua Pauli: 1) 1s32s22p6 2) 1s22s22p5 2 2 4 1 1 3) 1s 2s 2p 3s 3p 4) 1s22s22p63s23p63d10 5) 1s22s22p63s23p63d104s2 A .2 B. 1,2,3 C. 3,4,5 D. 2,5 4. Phn t hay ion no khng tn ti? A. H2+, Be2 B. O2, N2 C. He2, F2D. Be2, He2 D. B2, O2+ 5. X l mt nguyn t ha hc. Tng s ht proton, electron, neutron ca nguyn t nguyn t X l 108, trong s ht mang in nhiu hn s ht khng mang in l 24. Tr s 4 s lng t ca in t cui ca X trng thi c bn l: A. n = 4; l = 1; m = 0; ms = +1/2 B. n = 4; l = 1; m = +1; ms = +1/2 C. n = 4; l = 1; m = +1; ms = 1/2 D. n = 3; l = 1; m = +1; ms = +1/2 6. Trng hp no sau y khng ch ng trng thi lai ha ca nguyn t trung tm Xe? A. XeF2: sp3d B. XeO3: sp3 C. XeF4: sp3 D. XeOF4: sp3d2 7. Theo thuyet lai hoa, cac ocbitan tham gia lai hoa can phai co cac ieu kien: 1) Cac ocbitan co hnh dang hoan toan giong nhau. 2) Cac ocbitan co nang lng gan nhau. 3) Cac ocbitan tham gia lai hoa phai thuoc ve cung mot nguyen t. 4) Cac ocbitan tham gia lai hoa phai co mat o electron u ln. A. 2,3,4 B. 1,2,3,4 C .1,3 D. 1,2 8. Trang thai lai hoa cua cac nguyen t C theo th t t trai qua phai cua phan t CH2 = C = CH CH3 la: A. sp , sp2 , sp2 , sp3 B. p2 ,sp , sp2 , sp3 2 2 2 3 2 C .sp , sp , sp , sp D. sp , sp , sp2 , sp3 9. Cau hnh electron hoa tr cua ion CN- la (z la truc lien ket)

A. ( 2s ) * s 22

( ) ( ) (2 2 2pz

2px

2py

)

4

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Thi Th Ha i Cng

( ) ( ) ( ) C. ( ) ( ) ( ) ( ) ( ) D. ( ) ( ) ( ) ( ) ( )B. ( 2s ) * s 22 2 4 2 2px 2py 2pz

2

2s

* 2 2s

2

2

2

2px

2pz4

2pz1

2

2s

* 2 2s

2px

2py

2pz

1 * 2px

10. Chn cu sai: A. Phn t B2 c cu hnh electron theo thuyt MO l: KK (2Slk)2 (2S*)2 (xlk)1 (ylk)1. B. Phn t N2 b t trng y C. [Fe(H2O)6]Cl2 c tn l hexaaqu st (II) chlorur D. Co2+ spin thp c tnh nghch t. 11. Chon phng an sai: A. He co lap la he khong co trao oi chat, khong trao oi nang lng di dang nhiet va cong vi moi trng. B. He kn la he khong trao oi chat va cong, song co the trao oi nhiet vi moi trng. C. He oan nhiet la he khong trao oi chat va nhiet, song co the trao oi cong vi moi trng. D. He h la he khong b rang buoc bi han che nao, co the trao oi chat va nang lng vi moi trng. 12. Phn ng chy isooctane: 2(CH3)2CH-CH2-C(CH3)3 (l) + 25O2 (k) 16CO2 (k) + 18H2O (l), H298K = -10 930,9 kJ Khi t chy ht 342 gam isooctane (l), lng nhit trao i vi mi trng iu kin chun l: A. Thu vo 32 792,7 kJ B. Ta ra 16 396,35 kJ C. Ta ra 16 396,35 kJ D. H = - 32 792,7 kJ 13. Bit: 2P(r) + 3Cl2(k) 2PCl3(l) , PCl3(l) + Cl2(k) PCl5(r) Sinh nhit mol chun ca PCl5 ( r) l: A. -108,7 kJ/mol C. -909,61 kJ/mol B. -772,37 kJ/mol D. -454,81 kJ/mol , H0298K = - 635,13 kJ H0298K = -137,24 kJ

14. Chon gia tr ung. Khi ot chay than ch bang oxy ngi ta thu c 33g kh cacbonic va co 70,9 kcal thoat ra ieu kien tieu chuan, vay nhiet tao thanh tieu chuan cua kh cacbonic co gia tr (kcal/mol). A. -94,5 B. -70,9 C .94,5 D. 68,6 15. Xem phn ng: MgCO3(r) MgO(r) + CO2(k) Cho bit:

Cht H0298K S0298K

MgCO3(r) -1 111,69 65,84

MgO(r) -601,24 26,85

CO2(k) -393,52 213,79 Page 2

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Coi H, S ca phn ng khng thay i theo nhit . Nhit thp nht phn ng trn xy ra l: A. 800oC B. 668oC C. 476oC D. 396oC 16. Tnh hng s cn bng ca phn ng sau 25 C: N2(K) + 3H2(K) => 2NH3(K) Cho bit delta G0298,s (NH3 k) = - 16,5 KJ/mol. A. 102.89 B. 2.9 C. 1.03 D. 9.2 17. H2 (k) + O2 (k) H2O(k) H0298 = - 241,83 kJ/mol Bit nhit hoa hi cua nc bng 44,01 kJ/mol. Nng lng lin kt: E H-H = 436 kJ.mol-1 . E O=O = 498.8 kJ.mol-1 Nng lng lin kt trung bnh O H ca nc l: A. 485,62 B. 110,0 C. 285.84 D. 207,9 18. Tnh hiu ng nhit ca phn ng: C2H4 (k) + H2 (k) C2H6 (k) Bit: E H-H = 436 kJ.mol-1 . E C-C = 327. E C=C = 619. E C-H = 414 A. -100 B. 100 C. -187.2 D. 187.2 19. Chon trng hp ung. ieu kien tieu chuan, 250C phan ng: H2(k) + O2(k) = H2O(l) Phat ra mot lng nhiet 241,84 kJ. T ay suy ra: 1) Nhiet ot chay tieu chuan 250C cua kh hydro la -241,84kJ/mol 2) Nhiet tao thanh tieu chuan 250C cua hi nc la -241,84kJ/mol 3) Hieu ng nhiet cua phan ng tren 250C la -241,84kJ 4) Nang lng lien ket H O la 120,92 kJ/mol A. 1, 2, 3,4 B. 1, 3, 4 C .1, 3 D. 2, 4 20. Cho cc s liu sau: H2 (k) + O2 (k) H2O (l) , H0 = -285.8kJ N2O5 (k) + H2O (l) 2HNO3 (l), H0 = -76.6 kJ N2 (k) + 3/2 O2 + H2 HNO3 (l), H0 = -174.1 kJ H0 ca phn ng 2N2 (k) + 5 O2 (k) 2 N2O5 (k) l: A. 28,4 kJ B. 28,4 kJ C. 284 kJ D. -284 kJ 21. Chon phat bieu ung: 1) Entropi cua chat nguyen chat trang thai tinh the hoan chnh, nhiet o khong tuyet oi bang khong. 2) khong o tuyet oi, bien thien entropi trong cac qua trnh bien oi cac chat trang thai tinh the hoan chnh eu bang khong. 3) Trong he h tat ca cac qua trnh t xay ra la nhng qua trnh co kem theo s tang entropi. 4) Entropi cua chat trang thai long co the nho hn entropi cua no trang thai ran. A. 1,2 B. 1 C. 1,2,3 D. 1,2,3,4 22. Chon trng hp ung.

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Thi Th Ha i CngTrong cac hieu ng nhiet ( H) cua cac phan ng cho di ay, gia tr nao la hieu ng nhiet ot chay? 0 = -110,55 kJ H 298 1) C(gr) + O2(k) = CO(k) 2) H2(k) + O2(k) = H2O(k)

0 = -237,84kJ H 298D. 2,3

0 = -393,50kJ H 298 3) C(gr) + O2(k) = CO2(k) A. 3 B. 1,3 C. 1,2

23. Astatine, At, mt nguyn t halogen, c th tng hp nhn to bng phn ng bn ph ht nhn. 211At c hot tnh phng x to tia alpha, Astatine rt hu ch trong iu tr mt s bnh ung th tuyn gip. Mt bnh nhn c ch nh dng 0,100 mg Astatine lc 9 gi sng, hi sau 14 gi lng Astatine cn li bao nhiu, bit half-life ca 211At l 7,21h v phn ng l bc nht: A- 0,026 mg. B- 0,039 mg. C- 0,060 mg. D- 0,006 mg. 24. chon cu ung Phn ng phn r phng x nguyn t 226Ra l bc nht. Hi mt thi gian bao nhiu nm (lm trn), mu Ra phn hu 10%, bit half-life l 1602 nm (yr):

AC .124 yr.

244 yr. D. 424 yr.

B. 242 yr.

25. Cho phn ng 2 O3 (k) 3 O2 (k) Nu tc to ra oxy l 6,94 .10-1 M/s th s phn hu ozon l: A0,231 M/s. B- 0,463 M/s. C -0,104 M/s. D- 2,080 M/s. 26. Kt qua thc nghim t phan ng: NO (k) + NO2 (k) + O2 (k) N2O5 (k) nhit T 0K c cho trong bang sau: Th t TN [NO] M TN 1 TN 2 TN 3 TN 4 0,10 0,20 0,20 0,10

[NO2] M 0,10 0,10 0,30 0.10

[O2] M 0,10 0,10 0,20 0,20

Tc phn ng (M.s-1 2,1 . 10-2 4,2 . 10-2 1,26 . 10-1 2,1 . 10-2

Biu thc vn tc phan ng v hng s vn tc k da vo kt qu thc nghim trn la: A- V = k[NO] [NO2]2 [O2] , k = 1,2 M-1s-1. B- V = k[NO] [NO2] , k = 1,2 M-1s-1. C- V = k[NO] [NO2] , k = 2,1 M-1s-1. D - V = k[NO] [NO2] [O2] , k = 2,1 M-1s-1 . 27. Mt phn ng xy ra trong dung dch c c ch nh sau: Giai on 1 (chm): Ce4+ + Mn2+ Ce3+ + Mn3+ Giai on 2 (nhanh): Ce4+ + Mn3+ Ce3+ + Mn4+

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Thi Th Ha i CngGiai on 3 (nhanh): Mn4+ + Tl+ Mn2+ + Tl3+ A. Tc cht: Ce4+ , Mn2+, Mn3+, Mn4+, Tl+ C . Cht trung gian: Mn2+, Mn3+, Mn4+

B. Sn phm: Ce3+ , Mn2+, Tl3+ D. Cht xc Tc: Mn2+

28. Hng s cn bng Kp, Kc ca phn ng cn bng ph thuc vo: (1) Bn cht phn ng. (2). p sut ring phn hay nng cc cht trong p. (3) Nhit p. (4) H s ng trc cc cht trong p. Cc ng l: A. (1), (2), (3), (4) B. (1), (3) C. (1), (3), (4) D. (2), (3) 29. Chon cu ng Khi phosgene COCl2 c tao thanh qua 2 bc: Bc 1 Cl + CO COCl Bc 2 COCl + Cl2 COCl2 + Cl APhosgene c s dung trong mt na phong c. BCht trung gian phan ng la CO. CPhng trinh tng quat phan ng tng hp phosgene la CO + 2Cl COCl2. DCht xuc tac la Cl. 30. Chon phng an sai. Cac ai lng di ay eu la ham trang thai: A. The ang ap , noi nang, cong. B. Entanpi, entropi, nhiet dung ang ap. C. Nhiet o, ap suat, the ang tch, the ang ap D. The ang ap, entanpi, entropi, noi nang, nhiet dung ang tch. 31. Phan ng CO (k) + Cl2 (k) COCl2 (k) c thc hien trong bnh kn nhiet o khong oi. Nong o ban au cua CO va Cl2 bang nhau va bang 0,4 mol/l. Khi he at trang thai can bang th ch con 50% lng CO ban au. Sau khi can bang c thiet lap ta them 0,1 mol CO vao 1 lt hon hp. Nng CO trng thi cn bng mi l: A. 0,027 B. 0,03 C. 0,27 D. 0,3 32. chon cu ung Cho phan ng Ca (r) + 2 H2O (l) Ca(OH)2 (dd) + H2 (k) nhit xac inh 2,50 g Ca phan ng ht trong 30 giy. Vn tc phan ng tiu thu Ca la: A- 0,08330 mol.min-1. B- 0,12500 mol.min-1. -1 C- 5,00000 mol.min . D - 0,00208 mol.min-1. 33. chon cu ung

ng cong tin trinh phan ng cho bit nhng thng tin la:

100E (kJ)806040200 8 0 Tin trinh phan ng

A- H = + 20 kJ, Ea = 40 kJ, phan ng thu nhit.

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Thi Th Ha i CngB- H = - 10 kJ, Ea = 80 kJ, phan ng toa nhit. C- H = + 10 kJ, Ea = 40 kJ, phan ng thu nhit. D - H = + 20 kJ, Ea = 80 kJ, phan ng thu nhit.

34. Chon phng an ung: 1 lt dung dch nc cha 2g chat tan khong ien ly, khong bay hi co ap suat tham thau = 0,2 atm 250C. Hay tnh khoi lng mol cua chat o (cho R = 0,082 lt.atm/mol.K = 8,314 J/mol.K = 1,987 cal/mol.K A. 244 g/mol B. 20,5 g/mol C. 208 g/mol D. 592 g/mol 35. Cho phn ng A + B C Hng s tc k1 = 5,0 x 10-3 tai nhit 215 0C, va k2 = 1,2 x 10-1 tai nhit 452 0C Gia tri nng lng hoat hoa kJ/mol v hng s tc k ti 100 0C la: 39,4 kJ/mol v 3,7 .10-4 s-1. C. 27,4 kJ/mol v 2,5 .10-4 s-1. -4 -1 39,4 kJ/mol v 2,5 .10 s . D. 27,4 kJ/mol v 3,7 .10-4 s-1.\ 36. Chon phng an ung: Cac phan ng di ay ang trang thai can bang 25OC. 1) N2(k) + O2(k) 2NO(k) H0 > 0. 2) N2(k) + 3H2(k) 2NH3(k) H0 < 0. 3) MgCO3(r) CO2(k) + MgO(r) H0 > 0. 4) I2(k) + H2(k) 2HI(k) H0 < 0 Can bang cua phan ng nao dch chuyen manh nhat theo chieu thuan khi ong thi ha nhiet o va tang ap suat chung: A .Phan ng 1 B. Phan ng 4 C .Phan ng 2 D. Phan ng 3 37. Chon phng an ung: Tch so tan cua Cu(OH)2 bang 2.10-20.. Them dan NaOH vao dung dch muoi Cu(NO3)2 0,02M cho ti khi ket tua Cu(OH)2 xuat hien. Vay, gia tr pH ma khi vt qua no th ket tua bat au xuat hien la: A. 9 C. 4 B. 5 D. 6 38. Chon phat bieu ung: 1) Nong o phan t gam la so phan khoi lng (tnh theo n v gam) cua chat tan hoac cua dung moi trong dung dch. 2) Khoi lng rieng cua mot chat la khoi lng (tnh bang gam) cua 1 cm3 chat o. 3) Nong o molan cho biet so mol chat tan trong 1000g dung dch. 4) Can biet khoi lng rieng cua dung dch khi chuyen nong o % thanh nong o phan t gam hoac nong o ng lng gam. A. 1, 3 B. 2, 4 C. 1, 2, 4 D. 2, 3 39. Tnh pH ca dung dch gm 50ml NaOH 0,1M v 150ml CH3COOH 0,2M. pKa = 4,76. A. 4,06 B. 4,2 C. 5,02 D. 4,9

AB-

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Thi Th Ha i Cng40. Cho 100ml dung dch HCl 0,01M vo 100ml dung dch NH3 0,01M (pKb = 4,74). pH ca dung dch thu c l: A. 5,78 B. 5,44 C. 5,52 D. 5,71 41. Tnh pH ca dung dch HCOONH4, bit pKa = 3,76 , pKb = 4,74: A. 6,72 B. 6,81 C. 6,63 D. 6,51 42. Cho phn ng: 2FeSO4 + CuSO4 Cu + Fe2(SO4)3 Br2 + 2KI 2KBr + I2 Cho bit 2 phn ng trn ln lt xy ra theo chiu no? A. Thun, thun B. Thun, nghch C .Nghch, thun D. Nghch, nghch 43. Tnh 0Fe3+/Fe , bit 0Fe2+/Fe = - 0.44; 0Fe3+/Fe2+ = 0,77: A. 1,21 B. -0,04 C. 0,33 D. -0,07 44. Chn cu ng: Phng trnh Nerst 250C l: 0.0256 [oxh ] 0.059 [oxh ] 0 0 ln ln A. = + C. = + n [kh ] n [kh ] 0.0256 [oxh ] n [oxh ] 0 0 ln ln B. = D. = n [ kh ] 0,059 [ kh ] 45. chon cu ung Pin Daniell c k hiu: Zn ZnSO4 0,1M CuSO4 0,01MCu Cho bit: 0Zn2+/Zn = - 0,76 (v) , 0Cu2+/Cu = + 0,34 (v). 298 0K, sc in ng ca pin l: A. + 1,0705 (v). B. + 1,1 (v). C. - 1,1 (v). D. - 1,0705 (v). 46. chon cu ung Mt Pin c k hiu: Zn ZnSO4 0,1M KCl 1MAgCl (r), Ag Sc in ng ca pin 298 0K bng 1,015 (v) v 338 0K bng 0,9953 (v) A- S = + 95,2 J.K-1.mol-1. B- H = + 224,3 Kj/mol. C- G = + 195,9 Kj/mol. D- Tt c A, B, C u sai. 47. chon cu ung Dung dch NaCl 0,01M c nhit ng c l 0,0186 0C. Bit hng s nghim lnh ca nc l 1,86. H s ng trng ( i ) ca dung dch trn 2. H s hot ( f ) ca NaCl trong dung dch c gi tr l: A- 0,7. B- 0,6. C- 0,5. D- 0,4. 48. chon cu ung Dung dch cha 0,2 mol cht in ly mnh MX khng bay hi trong 1000 (g) H 2O c nhit ng c l 0,7 0C. Bit hng s nghim lnh l 1,86. in ly ( ) ca MX c gi tr l: A- 0,82. B. 0,88. C. 0,27 D. 0,91. 49. chon cu ung o pH (trn my) c thc hin bng cch: Pin (1): (Pt) H2 dd (X) in cc calomen Pin (2): (Pt) H2 dd HCl 0,01M in cc calomen Cho bit: 25 0C, sc in ng ca pin (1) bng 0,549 (v). ca pin (2) bng 0,49 (v ). pH ca dd (X) c gi tr l: A- 4. B- 3. C- 2. D- 1.

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Thi Th Ha i Cng50. Trong so cau di ay cau sai la: 1) Dung dch em co gia tr pH xac nh va khong thay oi khi pha loang dung dch. 2) He em baz c tao r a t dung dch baz yeu va muoi cua no vi mot axit yeu. 3) He em axit c tao ra t dung dch axit yeu va muoi cua no vi mot baz manh. A. 1 B. 2 C. 3 D. 1,2,3 51. Chon ap an ung: Cho phan ng: Sn4+ + Cd Sn2+ + Cd2+ 0 0 The kh chuan Sn 4 + / Sn 2 + = 0,15V Cd 2 + / Cd = 0,40 V 1) Phan ng dien ra theo chieu nghch ieu kien tieu chuan 2) Ky hieu cua pin tng ng la: (-)Pt| Sn2+,Sn4+Cd2+| Cd(+) 3) Sc ien ong tieu chuan cua pin E0 = 0,25V 4) Hang so can bang cua phan ng 250C la 4 1018 A. 4 B. 1,2 C. 2,4 D. 1,2,3 52. Ho cua phan ng co phu thuoc vao chat xuc tac khong? A. Co, v chat xuc tac tham gia vao qua trnh phan ng. B. Khong, v chat xuc tac ch tham gia vao giai oan trung gian cua phan ng va c phuc hoi sau phan ng. San pham va tac chat van giong nh khi khong co chat xuc tac. C. Co, v chat xuc tac lam giam nhiet o can co e phan ng xay ra. D. Co, v chat xuc tac lam giam nang lng hoat hoa cua phan ng. 53. Phan ng CO (k) + Cl2 (k) COCl2 (k) la phan ng n gian. Neu nong o CO tang t 0,1M len 0,4M; nong o Cl2 tang t 0,3M len 0,9M th toc o phan ng thay oi nh the nao? A. Tang 3 lan B. Tang 4 lan C. Tang 12 lan D. tang 21 lan 54. Trng thi lai ha ca P trong PCl4+ l: A. sp3 B. sp2 C. sp4 D. sp3d 55. D on phn ng sau c xy ra ktc khng? Fe + 2Ag+ Fe2+ + 2Ag, bit 0Fe2+/Fe = -0,44V ; 0Ag+/Ag =

0,799V. A. Khng xy ra.Nu c, cng A = ? B. C. A = 239127 J 154207 J C. C. A = 0 D. C. A =

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CHC CC BN THI TT! ^^

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