P4 SPMRSM KIMIA 2017 students copy

(1)

Name : ………

MAKTAB RENDAH SAINS MARA 2017

CHEMISTRY

Paper 4 One hour thirty minutes

DO NOT OPEN THIS QUESTION BOOKLET UNTIL BEING TOLD TO DO SO

INSTRUCTION / ARAHAN:

This question booklet contains 8 printed pages. 1. Write your name, class and index number in

the space provided.

2. You are not allowed to work with the apparatus during the first ten minutes. This period is used to check the apparatus, reading the question and planning your work.

3. Record all observations and conclusion of your experiments in the provided spaces. 4. Important calculation steps must be shown.

You are advised to record your observation immediately after the observation.

5. Mark is given based on accurately recorded observation and the conclusion.

6. Non programmable electronic calculator is allowed to be used.

CONFIDENTIAL

Question _MarksFull Marks

1 19

2 23

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You are not allowed to work with the apparatus for the first ten minutes. This period is used to check the list of apparatus, reading the question and planning the experiment that will be conducted. Mark (√) on the provided box to check the materials and apparatus that are provided.

Anda tidak dibenarkan bekerja dengan alat radas bagi sepuluh minit yang pertama. Tempoh ini hendaklah digunakan untuk menyemak senarai alat radas, membaca soalan dan merancang eksperimen yang akan anda jalankan. Tandakan (√) pada ruangan kotak yang disediakan untuk menyemak bahan dan alat radas yang dibekalkan.

No.

1. Copper(II) sulphate solution CuSO_{Larutan kuprum(II) sulfat, CuSO4, 0.2 mol dm}4, 0.2 mol dm-3 -3 _{(250 cm}Shared3₎

2. Magnesium powder with label _{Serbuk magnesium berlabel}_MgMg 1g

3. Zinc powder with label Zn

Serbuk zink berlabel Zn 1g

4. Polystyrene cup with lid_{Cawan polistirena dengan penutup} 1

5. Thermometer_Termometer 1

6. Measuring cylinder 25 cm3

Silinder penyukat 25 cm3 1

7. Sodium hydroxide solution, NaOH 1.0 mol dm-3

Larutan natrium hidroksida NaOH 1.0 mol dm-3 _{(150 cm}shared3₎ 8. Ammonia solution, NH3 1.0 mol dm-3 10. Lead(II) nitrate solution labelled as Pb(NO3)2 0.1 moldm-3

Larutan plumbum(II) nitrat dilabel Pb(NO3)2 0.1 moldm-3

shared (50 cm3₎ 11. Barium chloride solution labelled as BaCl2, 0.1 moldm-3

Larutan barium klorida dilabel BaCl2, 0.1 moldm-3

shared (50 cm3₎

12. Distilled water_{Air suling} 1 bottle per student

13. Salt S1

Garam S1

1 packet per student (2.0 g)

14. Test tube_{Tabung uji} 5 per student

15. Boiling tube _{Tabung didih} 1 per student

16. Test tube rack

Rak tabung uji 1 per student

17. Filter funnel

Corong turas 1 per student

18. Measuring cylinder 50 cm_{Silinder penyukat 50 cm}3 3 1 per student

19. Glass rod

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1 In this experiment, you are required to determine the heat of displacement of copper by using different metals.

Dalam eksperimen ini, anda dikehendaki menentukan haba penyesaran bagi kuprum menggunakan logam berbeza.

You are provided with:

 0.2 mol dm-3_{copper (II) sulphate solution}  Metal powder labeled Mg

 Metal powder labeled Zn

Anda dibekalkan dengan:

 Larutan kuprum (II) sulfat 0.2 mol dm-3

 Serbuk logam berlabel Mg

 Serbuk logam berlabel Zn

Procedure:

1. Measure 50 cm3_{of 0.2 mol dm}-3_{copper (II) sulphate solution and pour it into a}

polystyrene cup.

2. Put the thermometer into the copper (II) sulphate solution. 3. Record the initial temperature of the solution.

4. Add Mg powder until excess into the copper (II) sulphate solution. 5. Stir the mixture with the thermometer and record the highest temperature. 6. Repeat the steps 1 to 5 by replacing Mg with Zn

Prosedur:

1. Sukat 50 cm3_{larutan kuprum (II) sulfat 0.2 mol dm}-3_{dan tuangkan ke dalam cawan} polistirena.

2. Masukkan termometer ke dalam larutan kuprum (II) sulfat. 3. Catatkan suhu awal larutan.

4. Tambahkan serbuk Mg hingga berlebihan ke dalam larutan kuprum(II) sulfat. 5. Kacau campuran dengan menggunakan termometer dan catatkan suhu tertinggi. 6. Ulangi langkah 1 hingga 5 dengan mengantikan serbuk Mg dengan Zn.

(a) Record the reading of the thermometer in the table below

Catatkan bacaan termometer ke dalam jadual di bawah

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[2 markah]

Based on the experiment:

Berdasarkan eksperimen :

(b) State the manipulated variable

Nyatakan pemboleh ubah dimanipulasi

……… [1 mark]

[1 markah]

(c) Write a balanced chemical equation for the reaction between copper(II) sulphate solution and Mg.

Tuliskan persamaan kimia yang seimbang bagi tindakbalas antara larutan kuprum(II) sulfat dan Mg

……… [1 mark]

[1 markah]

(d) Calculate the number of mole of copper(II) sulphate solution

Hitungkan bilangan mol bagi larutan kuprum(II) sulfat.

[1 mark]

[1 markah]

(e) Calculate the heat released in both experiments

Kirakan haba yang dibebaskan dalam kedua-dua eksperimen.

[2 marks]

(5)

(f) Calculate the heat of displacement in both experiment

Kirakan haba penyesaran dalam kedua-dua eksperimen

[4 marks]

[4 markah]

(g) Based on experiment between copper (II) sulphate solution and Zn, draw an energy level diagram.

Berdasarkan tindak balas di antara kuprum (II) sulfat dan Zn, lukiskan gambarajah aras tenaga

[2 marks]

[2 markah]

(h) State one observation in this experiments.

Nyatakan satu pemerhatian dalam eksperimen ini.

……… [1 mark]

[1 markah]

(6)

Bandingkan haba penyesaran kuprum untuk kedua-dua eksperimen. Terangkan jawapan anda.

……… ……… ……… [2 marks]

[2 markah]

(j) State the operational definition of heat of displacement.

Nyatakan definisi secara operasi bagi haba penyesaran

……… ……… [2 marks]

[2 markah]

(k) If the experiment is repeated by replacing Mg powder with aluminium powder, predict the heat of displacement that will be obtain.

Jika eksperimen ini diulangi dengan menggantikan serbuk Mg dengan serbuk aluminium, ramalkan haba penyesaran yang akan diperolehi.

……… [1 mark]

[1 markah]

2 Salt S1 consists of one cation and one anion. You are required to carry out an experiment to identify the ions from solid salt S1. Write the procedure, observation and relevant inferences in the space provided.

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Use solution formed for the following tests.

Garam S1 mengandungi satu kation dan satu anion. Anda dikehendaki menjalankan eksperimen untuk menentukan ion-ion daripada pepejal garam S1.

Tulis prosedur, pemerhatian dan inferens yand bersesuaian di dalam ruang yang disediakan. Larutkan garam S1 di dalam sebuah tabung didih menggunakan air suling.

Gunakan larutan yang terhasil bagi ujian-ujian berikut.

CHEMICAL TEST

UJIAN KIMIA PROCEDUREPROSEDUR OBSERVATIONPEMERHATIAN INFERENCESINFERENS (a) Sodium hydroxide

solution, NaOH Larutan natrium hidroksida

[3 marks] [3 markah]

[1 mark] [1 markah] (b)Ammonia solution,

NH3

Larutan ammonia

[3 marks]

[3 markah] [2 marks][2 markah] [1 markah][1 mark] (c)Nitric acid, HNO3

Asid nitric

[1 mark]

[1 markah] [1 markah][1 mark] [1 markah][1 mark] CHEMICAL TEST

UJIAN KIMIA

PROCEDURE PROSEDUR

OBSERVATION PEMERHATIAN

INFERENCES INFERENS (d) Lead(II) nitrate

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Larutan plumbum(II) nitrat

[1 mark] [1 markah]

[1 mark] [1 markah] (e)Barium chloride

solution, BaCl2

Larutan barium klorida

[1 mark]

[1 markah] [1 markah][1 mark] [1 markah][1 mark]

Cation : ………... Kation

Anion : ……… Anion