Pecutan Akhir Chemistry p2 p3 Spm 2013 (1)

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    PECUTAN AKHIR SPM 2013

    1

    PECUTAN AKHIR KIMIA SPM 2013

    1. Empirical formula of metal X oxide can be determined by using the setup of apparatus as

    below.

    (a) State the name of substance Q and the function of that substance.

    ..

    [ 2 marks ]

    (b) The chemical in the conical flask is used to prepare hydrogen gas. Write a balance

    chemical equation for this reaction.

    ..

    [ 2 marks ]

    (c) State one suitable metal oxide that can be used in this apparatus.

    ..

    [ 1 mark ]

    (d) The gas emitted at point A is tested whether it is pure or not. Why did we do this

    procedure?

    ..

    [ 1 mark ]

    (e) To get an accurate result, all metal x oxide must be completely react with hydrogen gas.

    State the procedure to ensure the complete reaction.

    ..

    ..

    [ 1 mark ]

    heat

    U Tube

    Retort stand

    A

    100 cm3of 2.0 mol

    dm-3

    of hydrochloric

    acid

    +

    zinc powder

    Conical flask

    Substance Q

    metal X oxide in

    asbestos paper

    Test tube

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    PECUTAN AKHIR SPM 2013

    2

    (f) The burning of metal x oxide produced the reading as below.

    mass of test tube + asbestos / gram 4.560

    Mass of test tube + asbestos + metal X oxide / gram 5.520

    Mass od test tube + asbestos + X / gram 5.328

    [ Molar mass : X = 64; O = 16 ]

    Calculate the empirical formula of metal X oxide.

    [ 3 marks ]

    2. Diagram 2 shows part of the Periodic Table of Elements. V, W, X, Y, Z and U do not represent

    the actual symbols of the elements.Rajah 2 menunjukkan sebahagian daripada Jadual Berkala. V, W, X, Y, Z dan U tidak mewakili simbol sebenar unsur

    berkenaan

    1 18

    2 13 14 15 16 17

    V W

    X Y Z

    U

    Diagram 2

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    PECUTAN AKHIR SPM 2013

    3

    (a) (i) Which element is a halogen?Unsur yang manakah adalah halogen?

    ..

    [ 1 mark ]

    (ii) Which element is transition element?Unsur yang manakah logam peralihan?

    ..

    [ 1 mark ]

    (iii) Which element exists as monoatomic naturally?Unsur yang manakah wujud sebagai gas monoatom secara semulajadi?

    ..

    [ 1 mark ]

    (b) (i) Write the electron arrangement for an atom of element X.

    Tuliskan susunan electron bagi atom unsur X.

    ..

    [ 1 mark ]

    (ii) Write the formula of the ion formed from atom of element X.Tuliskan formula bagi ion yang terbentuk daripada satu unsur X.

    ..

    [ 1 mark ]

    (c) (i) Why are elements X, Y and Z placed in the same period?Mengapakah unsur X, Y dan Z terletak dalam kala yang sama?

    ..

    [ 1 mark ]

    (ii) Arrange elements X, Y and Z according to the decreasing order in the size of

    atoms.Susun unsur X, Y dan Z mengikut saiz atom menurun.

    ..

    [ 1 mark ]

    (d) (i) Write the balance chemical equation for the reaction between element X and

    oxygen gas.Tuliskan persamaan kimia yang seimbang bagi tindak balas di antara unsur X dan gas oksigen.

    ..

    [ 1 mark ]

    (ii) Element X dissolve in water to produced a solution. Write the balance chemical

    equation.Unsur X melarut di dalam air untuk menghasilkan satu larutan. Tuliskan persamaan kimia yang

    seimbang.

    ..

    [ 1 mark ]

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    PECUTAN AKHIR SPM 2013

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    3. Figure below shows the 4 elements from the periodic table. The symbol does not show the

    actual symbol of the elements.Rajah di bawah menunjukkan 4 unsur dari Jadual Berkala. Simbol tidak menunjukkan symbol sebenar unsur

    tersebut.

    (a) (i) Write the electron arrangement of atom of element P.Tuliskan susunan electron untuk atom unsur P.

    ...

    [ 1 mark ]

    (ii) State the position of element P in the periodic tableNyatakan kedudukan unsur P di dalam Jadual Berkala

    ...

    [ 2 marks ]

    (ii) Explain your answer in (a) (ii)Terangkan jawapan anda di (a) (ii)

    ...

    [ 1 mark ]

    (b) (i) Q atom lose electron to produced an ion. Write the electron arrangement of Q

    ion.

    Atom Q hilang electron untuk menghasilkan ion. Tuliskan susunan electron untuk ion Q.

    ...

    [ 1 mark ]

    (ii) Draw the electron arrangement structure of Q ion.Lukiskan struktur susunan electron untuk ion Q.

    [ 2 marks ]

    (iii) Write the half equation for the formation of Q2+

    ion from Q atom.Tuliskan setengah persamaan tindak balas untuk pembentukkan ion Q

    2+dari atom Q.

    ...

    [ 1 mark ]

    P126

    Q2412

    R146

    S3517

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    PECUTAN AKHIR SPM 2013

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    (c) Which atoms display the characteristic for isotope? Explain why.Atom yang manakah menunjukkan sifat isotope? Terangkan mengapa.

    ..

    ..[ 2 marks ]

    (d) (i) State the chemical bond formed between Q and S.Nyatakan ikatan kimia yang terbentuk di antara Q dan S.

    ...

    [ 1 mark ]

    (ii) Draw the electron arrangement structure of this compound.Lukiskan struktur susunan electron untuk sebatian ini.

    [ 2 marks ]

    (e) (i) State the chemical bond formed between P and S.Nyatakan ikatan kimia yan terbentuk di antara P dan S.

    ...

    [ 1 mark ]

    (ii) Draw the electron arrangement structure of this compound.Lukiskan struktur susunan electron untuk sebatian ini.

    [ 2 marks ]

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    PECUTAN AKHIR SPM 2013

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    4. You are given two beakers, each contain 2.0 mol dm-3

    of sodium hydroxide solution and in the

    other beaker contain 2.0 mol dm-3

    of ammonia solution.Anda di beri dua bikar, setiap satu mengandungi larutan natrium hidroksida 2.0 mol dm

    -3dan bikar yang satu lagi

    mengandungi larutan ammonia 2.0 mol dm-3

    .

    (a) What is meant by strong alkali?Apakah yang di maksudkan dengan alkali kuat?

    [ 1 mark ]

    (b) Suggest the pH of sodium hydroxide solution and ammonia solution. Explain your

    answer.Cadangkan pH untuk larutan natrium hidroksida dan larutan ammonia. Terangkan jawapan anda.

    [ 3 marks ]

    (c) State one uses of sodium hydroxide solution in daily life.Nyatakan satu kegunaan larutan natrium hidroksida di dalam kehidupan seharian.

    [ 1 mark ]

    (d) 25 cm3of 2.0 mol dm

    -3of sodium hydroxide solution is dilute with 50 cm

    3of distilled

    water. Determine the new concentration of sodium hydroxide solution.25 cm

    3 larutan natrium hidroksida 2.0 mol dm

    -3di cairkan dengan 50 cm

    3 air suling. Tentukan kepekatan

    baru larutan natrium hidroksida.

    [ 2 marks ]

    (e) Sodium hydroxide solution also can be prepared by adding sodium to water in a beaker.

    Write a balance chemical equation for this reaction.Larutan natrium hidroksida juga boleh di sediakan dengan mencampurkan natrium kepada air. Tuliskan

    persamaan tindak balas kimia yang seimbang untuk tindak balas ini.

    [ 1 mark ]

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    PECUTAN AKHIR SPM 2013

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    (f) 25 cm3of 2.0 mol dm

    -3of sodium hydroxide solution is titrated with hydrochloric acid

    from a burette.25 cm

    3larutan natrium hidroksida 2.0 mol dm

    -3di titratkan dengan asid hidroklorik dari buret.

    (i) Draw the setup of apparatus of this experiment.Lukiskan rajah susunan radas untuk eksperimen ini.

    [ 2 marks ]

    (ii) Find the concentration sodium hydroxide solution of if 20 cm3

    of hydrochloric acid

    is needed to neutral the alkali completely.Cari kepekatan asid hidroklorik jika 20 cm

    3 larutan natrium hidroksida di perlukan untuk

    meneutralkan aklaki dengan lengkap.

    [ 3 marks ]

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    PECUTAN AKHIR SPM 2013

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    5. Diagram 6 shows the apparatus set up to determine the heat of precipitation of silver chlorideRajah 6 menunjukkan susunan radas untuk menentukan haba pemendakan argentum klorida.

    Diagram 6

    Table 6 shows the result of the experiment.Jadual 6 menunjukkan keputusan eksperimen ini.

    Table 6

    (a) What is the meaning of heat of precipitation?Apakah maksud haba pemendakan?

    ..

    ..

    [1 mark ]

    (b) Calculate :Hitung :

    (i) The heat released during the reaction.

    [ Specific heat capacity of solution, c = 4.2 J g-10

    C-1

    ; Density of solution = 1 gcm-3

    ]Haba yang dibebaskan semasa tindak balas.

    [Muatan haba tentu bagi larutan, c = 4.2 J g-10

    C-1

    ;Ketumpatan larutan = 1 gcm-3]

    [1 mark]

    Description

    PeneranganTemperature (

    0C)

    Suhu (0C)

    Initial temperature of sodium chloride solutionSuhu awal larutan natrium klorida

    27.0

    Initial temperature of silver nitrate solutionSuhu awal larutan argentum nitrat

    27.0

    Highest temperature of the mixtureSuhu maksimum campuran

    30.5

    50 cm3of 0.5 mol dm

    -3

    sodium chloride solution50 cm

    3larutan natrium klorida

    0.5 mol dm-3

    50 cm3of 0.5 mol dm

    -3silver nitrate solution

    50 cm3larutan argentum nitrat 0.5mol dm

    -3

    Plastic cup

    Cawan plastik

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    PECUTAN AKHIR SPM 2013

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    (ii) The number of moles of silver ions, Ag+in silver nitrate and chloride ions, Cl

    -in

    sodium chloride solutionBilangan mol ion arge