paper 1

SULIT 4541/1

SEKOLAH MENENGAH TEKNIK JOHOR BAHRU

PEPERIKSAAN PERCUBAAN SIJIL PELAJARAN MALAYSIA 2014

CHEMISTRY

Paper 1

Satu jam lima belas minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

1. Kertas ini mengandungi 50 soalan.2. Jawab semua soalan.3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan.4. Bagi setiap soalan, hitamkan satu ruangan sahaja.5. Sekiranya anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian hitamkan

jawapan yang baru.6. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.7. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.

Kertas soalan ini mengandungi 24 halaman bercetak4541/1 @ SMTJB copyright 2014 [ See next page

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4541/1Chemistry Paper 1Ogos20141¼ hours

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1 Diagram 1 shows an arrangement of particles.

Rajah 1 menunjukkan satu susunan zarah-zarah.

Diagram / Rajah 1

Which of the following substances consist of arrangement of particles as in Diagram 1?Antara yang berikut, yang manakah mempunyai susunan zarah seperti di dalam Rajah 1?

A Ice C SteamAir batu Wap

B Water D ArgonAir Argon

2 Diagram 2 shows the stages in the production of sulphuric acid using the Contact Process.Rajah 2 menunjukkan peringkat-peringkat dalam pembuatan asid sulfurik menggunakan Proses Sentuh.

Diagram / Rajah 2What is substance X?Apakah bahan X?

A Water C OxygenAir Oksigen

B Sulphur D Sulphur dioxideSulfur Sulfur dioksida

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Sulphursulfur

Sulphur dioxideSulfur dioksida

Sulphur trioxideSulfur trioksida

OleumOleum

Sulphuric acidAsid sulfurik

O2O2

Concentrated sulphuric acidAsid sulfurik pekat

Substance XBahan X

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3 Which of the following medicines is an antibiotic?Antara ubat berikut, yang manakah suatu antibiotik?

A Insulininsulin

B Codeinekodeine

C Streptomycinstreptomisin

D ParacetamolParasetamol

4 Which of the following substances is made up of atoms?Antara berikut, bahan yang manakah terdiri daripada atom?

A

B

C

D

IronFerum

Oxygen gasGas oksigen

NaphthaleneNaftalena

Sodium chlorideNatrium klorida

5 The relative formula mass of ammonium phosphate, (NH4)3PO4 isJisim formula relatif bagi (NH4)3PO4 ialah [ Relative atomic mass of H=1, N=14, O=16 and P=31]


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A

B

C

D

133

141

149

159

6 Which of the following are correct location of an element with proton number 9 in the periodic table of elements.Manakah antara berikut kedudukan yang betul bagi suatu elemen dengan nombor proton 9 di dalam jadual berkala unsur.

I Group 2 III Period 7Kumpulan 2 Kala 7

II Period 2 IV Group 17Kala 2 Kumpulan 17

A I and II C I and IIII dan II I dan III

B II and IV D III and IVII dan IV III dan IV

7 Diagram 4 shows the set up of the apparatus for electrolysis Rajah 4 menunjukkan susunan radas yang digunakan dalam elektrolisis

DIAGRAM 4 RAJAH 4 Which of the following compound can be used as an electrolyte? Antara sebatian berikut yang manakah boleh digunakan sebagai elekrolit

A Ammonia solution C Naphtalene Larutan ammonia Naftalena

B Glucose solution D EthanolLarutan glukosa Etanol

8 The diagram 5 shows the electron arrangement of a molecule of water ,H2 O


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ElectrolyteElektrolit

Carbon/KarbonCarbon/Karbon

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Rajah 5 menunjukkan susunan elektron bagi molekul air ,H2O

DIAGRAM 5 RAJAH 5 Which of the following statements is true about the molecule? Antara pernyataan berikut, yang manakah benar tentang molekul itu ?

A

B

C

D

The compound has high melting pointSebatian mempunyai takat lebur yang tinggi

Oxygen atom ,O has four pairs of electrons to shareAtom oksigen, O mempunyai empat pasang elektron untuk di kongsi

The bonding between molecules of water, H2O is of Van der Waals forcesIkatan antara molekul air, H2 O ialah daya Van der Waals

Each oxygen atom , O receives two electrons to form an oxide ionSetiap atom oksigen, O menerima dua elektron untuk membentuk satu ion oksida.

9 Which of the following is a strong acid?Antara yang berikut, yang manakah asid kuat?

A

B

C

D

Alkyl sulphonic acid Asid Alkil sulfonik

Ethanoic acidAsid etanoik

Palmitic acidAsid palmitik

Nitric acidAsid nitrik

10 Which of the following is a salt ?Antara berikut, yang manakah merupakan garam?


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H O H

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A

B

C

D

Lead (II) oxidePlumbum(II) oksida

Barium hydroxideBarium hidroksida

Aluminium nitrateAluminium nitrat

Hydrogen sulphateHidrogen sulfat

11 Diagram 6 shows the apparatus set-up used to study the rate of reaction of calcium carbonate and hydrochloric acid. Rajah 6 menunjukkan susunan radas yang digunakan untuk mengkaji kadar tindak balas kalsium karbonat dengan asid hidroklorik.

Diagram 6Rajah 6

The rate of the above reaction can be increased by Kadar bagi tindak balas di atas boleh ditingkatkan dengan

A using marble chips of smaller sizes.menggunakan saiz ketulan marmar yang lebih kecil

B lowering the temperature of the hydrochloric acid.merendahkan suhu asid hidroklorik.

C using a larger conical flask.menggunakan kelalang kon yang lebih besar.

D adding water to the hydrochloric acid.menambahkan air ke dalam asid hidroklorik.

12 Diagram 7 shows a conversion to obtain octyl ethanoate from glucose molecule, C6H12O6

Rajah 7 menunjukkan satu perubahan untuk memperolehi oktil etanoat daripada molekul glukosa,


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C6H12O6

DIAGRAM 7RAJAH 7

Name the reactions I, II and III Namakan tindak balas-tindak balas I,II dan III .

I II IIIA Fermentation Oxidation Hydrolysis

Penapaian Pengoksidaan Hidrolisis

B Fermentation Reduction EsterificationPenapaian Penurunan Pengesteran

C Fermentation Oxidation Esterification Penapaian Pengoksidaan Pengesteran

D Oxidation Reduction Esterification Pengoksidaan Penurunan Pengesteran

13 Diagram 8 shows the set up of apparatus for a chemical reaction.Rajah 8 menunjukkan susunan radas bagi satu tindak balas kimia.

DIAGRAM 8 RAJAH 8Which of the following statements is true for the reaction?Antara pernyataan berikut, yang manakah benar mengenai tindak balas itu?

A

B

C

D

Iron is reduced

Ferum diturunkan

Iron is an oxidising agent Ferum adalah agen pengoksidaan

Magnesium releases electron Magnesium membebaskan elektron

The oxidation number of magnesium decreasesNombor pengoksidaan magnesium berkurang

14 The following chemical equation shows the reaction of the formation of lead (II) sulphate precipitate.Persamaan kimia berikut menunjukkan tindak balas pembentukan mendakan plumbum (II) sulfat.


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Magnesium stripKepingan magnesium

Agar solutionLarutan agar-agar

Iron stripKepingan ferum

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Pb2+ (ak) + SO4 2- (ak) → PbSO4 (p) ∆ H = - 42 kJ mol -1

Which of the following is true about the reaction?Antara yang berikut, yang manakah benar tentang tindak balas itu?

Heat changePerubahan haba

Type of reactionJenis tindak balas

A Heat is releasedHaba dibebaskan

EndothermicEndotermik

B Heat is absorbedHaba diserap

ExothermicEksotermik

C Heat is releasedHaba dibebaskan

ExothermicEksotermik

D Heat is absorbedHaba diserap

EndothermicEndotermik

15 A sodium atom and a sodium ion Satu atom natrium dan satu ion natrium adalah

I are isotopes isotop

II have the same number of protonsmempunyai bilangan proton yang sama

III have the same number of electrons mempunyai bilangan elektron yang sama

IV have the same number of neutrons.mempunyai bilangan neutron yang sama

A II onlyII sahaja

B II and IV only II dan IV sahaja

C I, II and III only I, II dan III sahaja

D I, III and IV only I, III dan IV sahaja

16 The body of an aeroplane is made up of alloy X. Badan sebuah kapalterbang dibina dari sejenis aloi X.


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What is the alloy X? Apakah aloi X itu?

A

B

C

D

PewterPiuter

BrassLoyang

BronzeGangsa

DuraluminDuralumin

17 Which of the following is not correctly matched?Antara yang berikut yang manakah bukan padanan yang betul?

A

B

C

D

Food additives FunctionAcacia gum add colour to food

menambah warna pada makananAscorbic acid slows down the oxidation of food

melambatkan pengoksidaan makanan Sodium benzoate slows down the spoilage of food

melambatkan kerosakkan makananMonosodium glutamate makes the food tastier

menjadikan makanan lebih sedap

18 Which of the following is true about the charges of an electron, a neutron and a proton?Antara yang berikut, yang manakah benar tentang cas-cas bagi elektron, neutron dan proton?

A

B

C

D

19 The reaction between solution A and sodium chloride solution will produce lead (II) chloride precipitate and sodium nitrate solution.Tindak balas antara larutan A dan larutan natrium klorida akan menghasilkan mendakan plumbum(II) klorida dan larutan natrium nitrat.


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ElectronElektron

NeutronNeutron

ProtonProton

NegativeNegatif

PositivePositif

NeutralNeutral

PositivePositif

NeutralNeutral

NegativeNegatif

PositivePositif

NegativeNegatif

NeutralNeutral

NegativeNegatif

NeutralNeutral

PositivePositif

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Which of the following is solution A?Antara berikut, yang manakah larutan A?

A Lead(II) chloridePlumbum(II) klorida

B Lead(II) nitratePlumbum(II) nitrat

C Lead(II) carbonatePlumbum(II) karbonat

D Lead(II) sulphatePlumbum(II) sulfat

20 Table 1 shows the proton number of elements W,X,Y and Z. The letters used are not the actual symbol of the elements.Jadual 1 menunjukkan nombor proton bagi unsur-unsur W,X,Y ,dan Z. Huruf yang digunakan bukan simbol sebenar unsur itu.

TABLE 1 JADUAL 1

Which of the following shows the ascending order of the atomic size of the elements?Antara ynag berikut yang manakah menunjukkan susunan menaik saiz atom bagi unsur-unsur itu?

ABCD

W,X,Y,Z Z,W,X,YY,X,W,ZZ,Y,X,W

21 Element M and element L are located in Group 16 and Group 17 in the Periodic Table respectively. Elements M react with element L to form a compound.What is the chemical formula of the compound?Unsur M dan unsur L masing-masing terletak dalam Kumpulan 16 dan Kumpulan 17 dalam Jadual


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A + 2NaCl PbCl2 + 2NaNO3

ElementUnsur

Proton numberNombor proton

WXYZ

11131719

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Berkala. Unsur M bertindak balas dengan unsur L untuk membentuk suatu sebatian.Apakah formula kimia bagi sebatian itu?

A ML

B ML2

C M2L

D 2LM

22 Table 2 shows information about three voltaic cells.Jadual 2 menunjukkan maklumat tentang tiga sel voltan.

Pair of metalsPasangan logam

Potential difference (V)Beza keupayaan (V)

Positive terminalTerminal positif

R, S 2.7 S

S, T 1.5 S

U, T 0.6 U

Table / Jadual 2

What is a potential difference of the voltaic cell when metal U is paired with metal R?Berapakah beza keupayaan bagi sel voltan itu apabila pasangan logam U dan logam R digunakan?

A 0.9 V

B 1.2 V

C 1.8 V

D 3.3 V

23 The following equation represents the neutralisation reaction between barium hydroxide, Ba(OH)2 and nitric acid, HNO3

Persamaan berikut mewakili tindak balas peneutralan antara barium hidroksida, Ba(OH)2 dengan asid nitrik, HNO3.


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Ba(OH)2 + 2HNO3 → Ba(NO3)2 + 2H2O

What is the volume of 0.5 mol dm-3 nitric acid needed to neutralise 25 cm3 of 0.1 mol dm-3 barium hydroxide?Berapakah isipadu asid nitrik 0.5 mol dm-3 yang diperlukan untuk meneutralkan 25 cm3 barium hidroksida 0.1 mol dm-3 ?

A 2.5 cm3

B 5.0 cm3

C 10.0 cm3

D 12.5 cm3

24 Which of the following salts cannot be prepared with the reaction between metal and acid?

Antara garam berikut, yang manakah tidak boleh disediakan melalui tindak balas antara logam dengan asid?

A Iron (III) chlorideFerum (III) klorida

B Copper (II) chlorideKuprum (II) klorida

C Magnesium sulphateMagnesium sulfat

D Zinc sulphateZink sulfat

25 The reaction between hydrochloric acid and zinc produced hydrogen gas.The reaction completed within 50 second and the maximum volume of gas is 25 cm3.What is the average rate of the reaction?Tindak balas antara asid hidroklorik dengan zink menghasilkan gas hidrogen. Tindak balas lengkap dalam masa 50 saat dan isipadu maksimum gas ialah 25 cm3. Berapakah kadar purata tindak balas tersebut?

A 0.5 cm3 s-1 C 2.0 cm3 s-1

B 1.0 cm3 s-1 D 4.0 cm3 s-1

26 Diagram 9 shows the structural formula of an organic compound. Rajah 9 menunjukkan formula struktur satu sebatian organik.


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DIAGRAM 9 RAJAH 9

What is the IUPAC name for the compound Apakah nama mengikut IUPAC bagi sebatian tersebutA Pent-2-ene

Pent-2-ena

B 2-methylbut -1-ene2-metilbut-1-ena

C 2-methylbut-2-ene2-metilbut-2-ena

D 3-methylbut-1-ene3-metilbut-1-ena

27 Which of the following shows the correct oxidation numbers for each particle?Manakah antara berikut menunjukkan nombor pengoksidaan yang betul bagi setiap zarah?

Mg Na+ N3- H2O

A 0 +1 +3 -1

B 0 +1 -3 0

C 0 0 +3 -2

D 0 -1 -3 0

28 The following is a thermochemical equation.Berikut ialah suatu persamaan termokimia.


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Fe + CuSO4 → FeSO4 + Cu ∆H = -150 kJ mol-1

What is the heat change when 3.2 g copper is formed in this reaction?[ Relative atomic mass: Cu = 64 ]Berapakah perubahan haba apabila 3.2 g kuprum terbentuk dalam tindak balas ini?[ Jisim atom relatif: Cu = 64 ]

A 1.37 kJ

B 7.50 kJ

C 46.90 kJ

D 480.00 kJ

29 Diagram 10 shows two balloons filled with helium gas and hydrogen gas.Rajah 10 menunjukkan dua belon berisi gas helium dan gas hidrogen.

Diagram / Rajah 10 Which of the following statements are true about the gases?Antara pernyataan berikut, yang manakah benar tentang gas-gas tersebut?

A The number of moles of hydrogen gas is greater than helium gasBilangan mol gas hydrogen lebih besar daripada gas helium

B The number of helium atom is greater than hydrogen atom Bilangan atom helium lebih besar daripada atom hidrogen

C The number of moles of hydrogen gas and helium gas is equalBilangan mol gas hydrogen sama dengan bilangan mol gas helium

D The number of hydrogen gas molecules is greater than helium gas moleculeBilangan molekul gas hidrogen lebih besar daripada bilangan molekul gas helium

30 Part of a polymer molecule has the following structure:Sebahagian daripada molekul polimer mempunyai struktur yang berikut:


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100 cm3 of hydrogen gas, H2

100 cm3 gas hidrogen, H2100 cm3 of helium gas, He100 cm3 gas helium, He

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-CH2-CH2- CH2-CH2- CH2-CH2-

What is the monomer for the polymer shown above?Apakah monomer bagi polimer yang ditunjukkan di atas?

A C2H4

B C2H6

C C3H4

D C3H8

31 Which of the following is true about soap or detergent ?Antara yang berikut, yang manakah benar tentang sabun atau detergen ?

A

B

C

D

Soap forms scum in soft waterSabun membentuk kekat dalam air lembut

Detergent forms scum in hard waterDetergen membentuk kekat di dalam air liat

The presence of magnesium ions in detergent forms scum Kehadiran ion magnesium di dalam detergen membentuk kekat

Scum decreases the effectiveness of the cleansing action of a soapKekat mengurangkan keberkesanan tindakan pencucian sabun

32 Bromine-79 has 44 neutrons. Bromin-79 mempunyai 44 neutron

Which of the following symbols represent the bromine atom?Antara simbol berikut, yang manakah mewakili atom bromin?

A

B

C

D

33 The following chemical equation represents the reaction between hydrochloric acid and excess 4541/1 @ SMTJB copyright 2014 [ See next page

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79

35Br

44Br

35

7944 Br

79

35

Br

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zinc powder.Persamaan kimia berikut mewakili tindak balas antara asid hidroklorik dan serbuk zink berlebihan.

Zn + 2HCl ZnCl2 + H2

If 12.5 g of zinc reacts with 100 cm3 of 2.0 mol dm-3 hydrochloric acid ,what isthe mass of the unreacted zinc?Sekiranya 12.5 g zink bertindak balas dengan 100 cm3 asid hidroklorik 2.0 mol dm-3,berapakah jisim zink yang tidak bertindak balas?[Relative atomic mass of zinc = 65][Jisim atom relatif zink = 65]

A 6.0 g

B 6.5 g

C 12.5 g

D 19.0 g

34 Elements S, M and N are in the same period of the Periodic Table. The oxide of element S is amphoteric, the oxide of element M is acidic and the oxide of element N is basic.The true statements for elements S, M and N are

Unsur-unsur S, M dan N terletak dalam kala yang sama dalam Jadual Berkala. Oksida S bersifat amfoterik, Oksida M bersifat asid dan Oksida N bersifat bes.Pernyataan yang benar bagi unsur-unsur S,M dan N adalah

A atomic size of the elements decreases from N, S to Msaiz atom unsur-unsur berkurang dari N, S kepada M

B Proton number of the elements increases from S, M to NNombor proton unsur-unsur bertambah dari S, M kepada N

C Electronegativity of the elements decreases from N, S to MSifat keelektronegatifan unsur-unsur berkuang dari N, S kepada M

D The density of the elements increases from S, M to N.Ketumpatan unsur-unsur betambah dari S, M kepada N

35 The table 2 shows the electron arrangements of elements R, S, T dan U. Jadual 2 menunjukkan susunan elektron bagi unsur R, S, T dan U


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Which of the following pair of elements can form ionic compound? Antara pasangan unsur berikut, yang manakah boleh membentuk sebatian ion? A

B

C

D

R and SR dan S

S and US dan U

T and UT dan U

R and T R dan T

36 Sodium chloride solution, 2.0 mol dm-3 is electrolyzed using carbon electrodes.Which are the half equations for the reactions occurring at the anode and the cathode? Larutan natrium klorida, 2.0 mol dm-3 dielektrolisis menggunakan elektrod karbon. Yang manakah persamaan setengah bagi tindak balas yang berlaku di anod dan di katod?

AnodeAnod

CathodeKatod

A 4OH- O2 + 2H2O + 4e Na+ + e NaB 4OH- O2 + 2H2O + 4e 2H+ + 2e H2

C 2Cl- Cl2 + 2e 2H+ + 2e H2

D 2Cl- Cl2 + 2e Na+ + e Na

37 100 cm3 of water are added to 50 cm3 of 2 mol dm-3 sodium hydroxide.What is the molarity of the solution formed?100 cm3 air ditambah kepada 50 cm3 larutan natrium hidroksida 2 mol dm-3.Berapakah kemolaran larutan yang terhasil?

A 0.025 mol dm-3

B 0.1 mol dm-3

C 0.5 mol dm-3

D 0.67 mol dm-3

38 The following chemical equation shows the reaction of preparation lead(II) iodide salt.Persamaan kimia berikut menunjukkan tindak balas penyediaan garam plumbum(II) iodida.


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ElementsUnsur R S T U

Electron arrangementSusunan elektron 2.4 2.8 2.8.7 2.8.8.2

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Pb (NO3)2 (aq) + 2KI(aq) PbI2 (s) + 2KNO3(aq) Pb (NO3)2 (ak) + 2KI(ak) PbI2 (p) + 2KNO3(ak)

What is the volume of potassium iodide 0.5 mol dm-3 solution needed to produce 4.61 g lead(II) iodide salt?Berapakah isipadu larutan kalium iodida 0.5 mol dm-3 yang diperlukan untuk menghasilkan 4.61g garam plumbum(II) iodida?

[Relative atomic mass of Pb= 207, I= 127][Jisim atom relatif P= 207, I= 127]

A

B

C

D

20 cm3

40 cm3

400 cm3

1440 cm3

39 Table 5 shows the total volume of gas collected at regular intervals in a reaction.Jadual 5 menunjukkan isipadu gas yang dikumpulkan pada julat masa tertentu dalamsatu tindak balas kimia.

TimeMasa/s 0 30 60 90 120 150 180 210 240

Volume of gasIsipadu gas/ cm3 0.0 18.0 24.0 28.0 29.5 30.5 31.0 31.5 31.5

TABLE 5JADUAL 5

What is the average rate of reaction in the second minute?Berapakah kadar tindak balas puata dalam minit kedua?

A 0.016 cm3 s-1

B 0.092 cm3 s-1

C 0.150 cm3 s-1

D 0.164 cm3 s-1

40 Diagram 9 shows a structural formula which represents a food flavouring substance.Rajah 9 menunjukkan formula struktur yang mewakili satu bahan perisa makanan.


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H O H H H H H

H C C O C C C C C H

H H H H H H

Diagram / Rajah 9

Which of the following can be used to make the flavouring?Antara yang berikut, yang manakah boleh digunakan untuk membuat perisa itu?

A Ethanol and propanoic acidEtanol dan asid propanoik

B Propanol and butanoic acidPropanol dan asid butanoik

C Butanol and ethanoic acidButanol dan asid etanoik

D Pentanol and ethanoic acidPentanol dan asid etanoik

41 Iron(III) ion, Fe3+ in solution can be converted into iron(II) ion, Fe2+ by adding zinc powder.Which of the following can replace zinc powder in the reaction?Larutan yang mengandungi ion ferum(III), Fe3+ boleh ditukarkan ke ion ferum(II), Fe2+ dengan menambahkan serbuk zink.Antara berikut yang manakah boleh menggantikan serbuk zink di dalam tindak balas ini?

ABCD

Bromine waterPotassium iodide solutionPotassium hexacyanoferrate(II) solutionAcidified potassium manganate(VII) solution

42 Diagram 11 shows the energy level diagram for the reaction between silver ions and chloride ions.Rajah 11 menunjukkan gambarajah aras tenaga bagi tindak balas antara ion argentum dan


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EnergyAg+(aq) + Cl- (aq)

AgCl(s)

DH = - 65.5 kJmol-1

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ion klorida

Diagram 11

Which of the following statements is true about this reaction?Manakah antara berikut adalah benar tentang tindak balas tersebut?

A

B

C

D

Endothermic reaction occursTindak balas endotermik berlakuThe energy content of the product is higher than the reactantsKandungan tenaga hasil tindak balas lebih tinggi daripada bahan tindak balas65.5 kJ of heat is absorbed when 1 mol of silver chloride is formed65.5 kJ haba diserap apabila 1 mol argentum klorida terbentukThe final temperature at the end of the reaction is higher than the initial temperatureSuhu akhir pada akhir tindak balas lebih tinggi daripada suhu awal.

43

What is the empirical formula of metal oxide J?Apakah formula empirik bagi oksida logam J?

[Relative atomic mass of J = 24, O = 16 ][Jisim atom relatif: J = 24, O = 16 ]

ABCD

JOJO2

J2OJ2O2

44 24 cm3 of 0.1 mol dm-3 sodium hydroxide solution completely neutralise 20 cm3 of sulphuric acid. What is the concentration of sulphuric acid?24 cm3 0.1 moldm-3 larutan natrium hidroksida meneutralkan dengan lengkap 20 cm3 asid sulfurik. Apakah kepekatan asid sulfurik?

A 0.06 moldm-3

B 0.04 moldm-3

C 0.02 moldm-3

D 0.01 moldm-3

45 Diagram 8 shows a set up of chemical cell using a pair of zinc and copper as electrodes.Rajah 8 menunjukkan susunan radas sel kimia menggunakan pasangan elektrod zink dan kuprum.


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2.0 g metal oxide J contains 1.2 g of element J2.0 g oksida logam J mengandungi 1.2 g logam J

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DIAGRAM 8 RAJAH 8

The blue copper(II) sulphate solution turns pale.Warna biru larutan kuprum(II) sulfat luntur

Which of the following explains the observation? Antara pernyataan berikut yang manakah menerangkan pemerhatian itu?

A

B

C

D

Zinc atom ionizesAtom zink mengion

Copper atom ionizesAtom kuprum mengion

Sulphate ion is dischargedIon sulfat dinyahscas

Copper(II) ion is dischargedIon kuprum(II) dinyahcas

46 In an experiment, 60 cm3 of 1.0 moldm-3 potassium carbonate solution reacted with 50 cm3 of 2.0 moldm-3 copper(II) sulphate solution to form copper(II) carbonate and potassium sulphate as follow:Di dalam satu eksperiment, 60 cm3 larutan kalium karbonat 1.0 moldm-3 bertindakbalas dengan 50 cm3 larutan kuprum(II) sulfat 2.0 moldm-3 dan menghasilkan kuprum(II) karbonat dan kalium sulfat seperti berikut:

K2CO3 + CuSO4 CuCO3 + K2SO4

What was the mass of copper(II) carbonate formed?Apakakah jisim kuprum(II) karbonat yang terhasil?[Molar mass of CuCO3 is 124][Jisim molar bagi CuCO3 adalah 124]

A 7.44 gB 7.60 gC 12.40 gD 14.88 g

47 The following information shows the results of an experiment to determine the heat change for the combustion of propanol, C3H7OH.Maklumat berikut menunjukkan keputusan bagi satu eksperimen untuk menentukan perubahan


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Copper(II) sulphate solutionLarutan kuprum(II) sulfat

ZincZinkCopper

kuprum

SULIT 4541/1

haba bagi pembakaran propanol, C3H7OH.

Volume of water in the copper containerIsipadu air dalam bekas kuprum = 300 cm3

Initial temperature of water in the copper containerSuhu awal air dalam bekas kuprum = 27.5 oC

The highest temperature of water in the copper containerSuhu tertinggi air dalam bekas kuprum = 68.5 oC

What is the heat released by the combustion of propanol, C3H7OH?[Specific heat capacity of water = 4.2 J g-1 oC-1; Water density = 1 g cm-3 ]Berapakah haba yang dibebaskan oleh pembakaran propanol, C3H7OH?[Muatan haba tentu air = 4.2 J g-1 oC-1; Ketumpatan air = 1 g cm-3 ]

A 34.65 kJ

B 51.66 kJ

C 86.31 kJ

D 120.96 kJ

48 Which of the following is true when a mixture of carbon and copper(II) oxide is heated strongly?Antara berikut yang manakah benar apabila satu campuran karbon dengan kuprum(II) oksida dipanaskan dengan kuat?

A

B

C

D

The oxide ion loses two electronsIon oksida kehilangan dua elektronThe copper(II) ion releases two electronsIon kuprum(II) melepaskan dua elektronThe copper(II) oxide acts as a reducing agentKuprum(II) oksida bertindak sebagai agen penurunanThe oxidation number of carbon increases from 0 to +4Nombor pengoksidaan karbon bertambah dari 0 ke +4

49 Diagram 13 shows the set up of the apparatus for an experiment to determine the rate of reaction between sodium thiosulphate solution and sulphuric acid solution.Rajah 13 menunjukkan susunan radas bagi eksperimen untuk menentukan kadar tindak balas


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SULIT 4541/1

antara natrium tiosulfat dengan asid sulfurik.

DIAGRAM 13 RAJAH 13

Which of the following combination of conditions take the longest time for the mark X to disappear from sight?Antara kombinasi keadaan berikut, yang manakah mengambil masa paling lama untuk tanda X hilang daripada penglihatan?

A

B

C

D

Sulphuric acid solution Larutan asid Sulfurik

Sodium thiosulphate solutionLarutan natrium tiosulfat

Temperature/ 0CSuhu/0C

Volume/cm3

Isipadu/cm3

Concentration/mol dm-3

Kepekatan/ mol dm-3

Volume/cm3

Isipadu/cm3

Concentration/mol dm-3

Kepekatan/ mol dm-3

10

10

10

20

1.0

1.0

0.5

0.5

50

50

50

40

0.5

0.5

0.5

0.5

30

40

30

40

50 Diagram 14 shows the structural formula of carbon compound JRajah 14 di bawah menunjukkan formula struktur sebatian karbon J


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Sodium thiosulphate solution and sulphuric acidLarutan natrium tiosulfat dan asid sulfurik

23

H H H H | | | | H – C – C – C = C – H | | H H

SULIT 4541/1

DIAGRAM 14 RAJAH 14

Which of the following statements are true?Antara pernyataan berikut, yang manakah benar?[Relative atomic mass of H = 1, C = 12 ][Jisim atom relatif H = 1, C = 12 ]

I

II

III

IV

A

B

C

D

Empirical formula of J is C4H8

Formula empirik J ialah C4H8

Name of the compound J is but-1-eneNama sebatian J ialah but-1-ena

Hydration of compoud J produce butan-1ol Penghidratan sebatian J menghasilkan butan-1-ol

Complete combustion of compound J produce carbon dioxide gas and waterPembakaran lengkap sebatian J menghasilkan gas karbon dioksida dan air

I and II onlyI dan II sahaja

III and IV onlyIII dan IV sahaja

I, II and III onlyI, II dan III sahaja

II, III and IV onlyII, III dan IV sahaja

END OF QUESTION PAPERKERTAS SOALAN TAMAT


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