Times 2011 Kimia Soalan

8/3/2019 Times 2011 Kimia Soalan

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104 SOALAN ULANGKJI SPM 2011

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Chemistry Analysis

[4541/1][4541/2][4541/3]

Chap er Paper 1Paper2 Paper3Sec ion A Sec ion B Sec ion C

06 07 08 09 10 06 07 08 09 10 06 07 08 09 10 06 07 08 09 10 06 07 08 09 10

1 In roduc ion ochemis ry - - - - - - - - - - - - - - - - - - - - - - - - -

2 Te s ruc ure o a om 3 4 6 10 6 1 - 1 - - - 1 - - - - - - - -

3 Chemical ormulaeand equa ion 6 6 4 7 4 1 - - - - - - - - - - - - - - -

4 Periodic able o elemen s 4 2 4 3 5 - 1 1 1 1 - - - - - - - - - - - 1 -

5 Chemical bond 4 3 4 3 3 2 - 1 - - - - - - - - - - - - - -6 Elec rochemis ry 2 7 4 6 5 - - - - 1 - - 1 - - 1 - - 1 1 - 1 - - 17 Acids and bases 3 4 4 3 4 - - - - 1 - - - 1 - - - 1 1 - - - - 18 Sal s - 1 2 2 3 - - - - 1 - 1 - - - - - - - - - - - -

9 Manu ac uredsubs ances in indus ry 5 4 4 2 4 1 1 1 1 - - - - - - - - - - - - - -

10 Ra e o reac ion 7 4 2 2 3 1 - 1 1 - 1 - - - 1 - 1 - - - - - - 1 111 Carbon compound 6 5 3 5 4 - - 1 1 - - - - - 1 - - - 1 - 1 -

12 Oxida ion andreduc ion 3 2 6 3 2 - 1 - - - - - - - - - - 1 - - - - - -

13 Termochemis ry 4 6 3 2 4 - - 1 1 - - - - - - - - - - 1 1 1 - -

14 Chemical or

consumer1 2 4 1 3 1 1 - - - - - 1 - - - - - -- - - -

15 o al 50 50 50 50 50 6 6 6 6 6 2 2 2 2 2 2 2 2 2 2 2 2 2 2


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1. Wha is a subs ance ha used as a baking powder?

A. Sodium chloride

B. Sodium sulpha eC. Calcium carbona eD. Sodium hydrogen carbona e.

2. Which o he ollowing s a emen s is rue abou one mole o a subs ance?

A. 1 mole o magnesium con ains 6 x 1023 moleculesB. 1 mole o carbon dioxide con ains 6 x 1023 a omsC. 1 mole o wa er con ains he same number o molecules as

he number o a oms in 12 g carbon-12.D. 1 mole o carbon monoxide con ains he same number o

a oms as he number o a oms in 12 g carbon-12.

3. Which o he ollowing subs ance has a correc molecularormula?

Subs ance Molecular ormulaI Cupper(II) ni ra e Cu(NO3)2II Silver chloride AgCl2III Sodium oxide NaOIV Aluminium sulpha e Al2(SO4)3

A. I and IIB. I and IIIC. I and IV D. I, II and III

4. Elemen s in Periodic able are arranged according o he

A. Increasing o pro on numberB. Increasing o nucleon numberC. Increasing o he size o a omsD. Increasing o number o elec ron

5. Re er o he diagram below, which o he ollowing is a rues a emen ?

A. A om Y has 13 neu ronsB. Elec ron arrangemen o a om Y is 2.8.8.5C. Ion Y has 11 pro onsD. Ion Y has 11 elec rons

Chemistry Paper 1 [4541/1]

6. When me al in group 1 reac s wi h wa er, acidic solu ion gas X produced. Wha is gas X?

A. OxygenB. Carbon dioxideC. ChlorineD. Hydrogen

7. able below shows he a om P, Q, R, S and i elec ronarrangemen . Which o he ollowing s a emen is rue?

A oms Elec ron arrangemen

P 2.1Q 2.8

R 2.8.5S 2.8.7

A. A om P has he smalles size.B. A om R is more elec ronega ive han a om S.C. A om P is mos elec ronega iveD. A om S is smaller han a om R.

8. Covalen bond be ween a oms ni rogen and a oms hydrogis ormed when

A. A om ni rogen receives elec ron rom a om hydrogenB. A om hydrogen receives elec ron rom a om ni rogenC. A om hydrogen dona es elec ron o a om ni rogenD. Bo h a oms share heir valence elec ron

9. Which o he ollowing is a proper y o ionic compound

A. Need a lo o energy o break heir bonds.B. Able o conduc elec rici y in solid s a eC. Soluble in organic solvenD. Easily o vola ile

10. Which o he ollowing s a emen s correc ly describe as rong acid?

I have a high pH valueII Ionizes comple ely in wa erIII Has a high concen ra ion o hydrogen ionsIV reac s wi h alkali o produce sal and wa er

A. I and IIB. II and IIIC. I, II and IIID. I, II, III and IV

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11. Calcula e he oxida ion number o carbon in CO3-2 ion?

A. +4B. - 4C. +5D. 5

12. Ion X 2+ has an elec ron arrangemen 2.8.8. Wha is pro onnumber o a om X?

A. 18B. 20C. 22D. 16

13. How many a oms ha con ain in 1 mol o chlorine gas, Cl2?

A. 6.0 x 1023 a omsB. 1.2 x 1024 a omsC. 3.0 x 1023 a omsD. 1.2 x 1023 a oms

14. X and Y reac o orm compound XY.

Which o he ollowing is rue abou compound produced?

A. Dissolve in e rachlorome hane

B. Exis as gas a room empera ureC. Has high mel ing and boiling poinD. Do no conduc elec rici y in he aqueous and mol en s a e

15. able below shows he pro on number o elemen s P, Q, R and S.

Elemen P Q R SPro on number 11 13 16 19

Arrange all hese elemen s in he order o increasing a omicsize

A. S, R, Q, PB. R, Q, P, SC. P, Q, R, SD. S, P, Q, R

16. Which s a emen correc abou noble gases

A. Exis as dia omic moleculesB. Do no ormchemical bonds

C. Form ions wi h di eren valenciesD. Combine wi h ransi ion me als o orm coloured compounds

17. A jar con ains 1.8 x 1022 molecules o oxygen gas. Calcula ehe mass o oxygen gas in his jar?

[ Rela ive A omic Mass : O, 16 ; Avogadro cons an ,6 x 1023 mol-1]

A. 0.30 gB. 0.74 gC. 0.96 gD. 0. 26 g

18. Calcula e he mass o elemen M ha combine wi h 2.8o elemen R o orm a compound. Te empirical ormula o

his compound is MR 2.[ Rela ive A omic Mass : R, 16 ; M, 55 ]

A. 4.00 gB. 9.90 gC. 3.25 gD. 4.95 g

19. Diagram below shows he appara us se up or elec rolysisilver ni ra e solu ion.

Wha are he produc s a elec rode X and Y?

Elec rode X Elec rode Y A. Oxygen gas Silver me alB. Oxygen gas Hydrogen gasC. Silver me al Oxygen gasD. Hydrogen gas Oxygen gas

20. Me al X orms an oxide wi h ormula X 2O3. I he ormula o chloride ion is Cl-, so he ormula o chloride compound X

A. XClB. XCl2C. XCl3D. X 2Cl3

2412 Y 168 Y

Carbon electrode, YCarbon electrode, X

Silver nitrate solution


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21. Wha is he produc o reac ion when zinc is reac ed wi hsodium carbona e?

I wa erII hydrogen gasIII zinc carbona eIV carbon dioxide gas

A. I and IIB. II and IIIC. I, III and IV D. I, II, III and IV

22. Which o he ollowing equa ion mos sui able o preparelead(II) sulpha e sal ?

A. Pb(NO3)2 + Na2SO4 PbSO4 + 2NaNO3B. Pb(CH3COO)2 + H2SO4 PbSO4 + 2CH3COOHC. Pb(NO3)2 + MgSO4 PbSO4 + Mg(NO3)2D. Pb + H2SO4 PbSO4 + H2

23. Which o he ollowing solu ions can show a pH value o 8?

A. 0.1 mol dm-3 o e hanoic acidB. 0.1 mol dm-3 o hydrochloric acidC. 0.1 mol dm-3 o ammonia solu ionD. 0.1 mol dm-3 o sodium hydroxide solu ion

24. Calcula e he volume o carbon dioxide gas released a S P

when 2.12 g o sodium carbona e is added o he excessdilu e hydrochloric acid.[ Rela ive A omic Mass : C, 12 ; O, 16 ; Na. 23 ; 1 mol gasoccupied 22.4 dm3 a S P]

A. 0.448 dm3B. 4.48 dm3C. 0.224 dm3D. 2,24 dm3

C2H4 + 3O2 2CO2 + 2H2O

25. Calcula e he volume o oxygen gas ha is needed o burn14 g o e hene comple ely a room condi ion?[ Rela ive A omic Mass : C, 12 ; H, 1 ; 1 mol gas occupied

24 dm3 a room condi ion]

A. 12 dm3B. 36 dm3C. 24 dm3D. 48 dm3

26. Calcula e he mass o copper(II) chloride mus be dissolvein wa er o prepare 200 cm3 0.3 moldm-3 o copper(II)chloride solu ion.[ Rela ive A omic Mass : Cu, 64 ; Cl, 35.5]

A. 13.5 gB. 4.1 gC. 2.4 gD. 8.1 g

27. able below shows he vol me er reading or he di erenpairs o me al. Arrange me als K, L, M and N in descendinorder in he Elec rochemical Series.

Pairs o me al Vol me erreading/v Posi ive erminal Nega ive erminal

K L 2.7N M 1.4K N 0.8M L 0.5

A. L, N, K, MB. M, N, K, LC. L, M, N, K D. K, N, M, L

28. 25 cm3 o 0.1 moldm-3 sodium hydroxide solu ion is neededo neu ralize 20 cm3 dilu e sulphuric acid. Calcula e he

concen ra ion o his sulphuric acid?

A. 0.125 moldm-3B. 0.05 moldm-3C. 0.0625 moldm-3D. 0.01 moldm-3

29. Diagram below shows he se up appara us o s udy he eo hea on sal .

Hea s rongly Lime wa er

Which o he ollowing sal will no urn lime wa er ocloudy?

A. Sodium carbona eB. Lead(II) carbona eC. Copper(II) carbona eD. Zinc carbona e


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30. Which o he ollowing is rue abou alloy and i s majorcomponen ?

Alloy Major componen A. Duralumin MagnesiumB. S eel inC. Bronze CopperD. Pew er Zinc

31. A subs ance has he ollowing proper ies: Hard and opaque Good insulator of heat and electricity Inert towards chemicals

Which o ollowing subs ances has he above proper ies?

A. CeramicB. GlassC. Me alD. Polymer

32. An experimen is carried ou o s udy he ra e o reac ion be ween magnesium and hydrochloric acid o producehydrogen gas.

Experimen Subs ancesI 4 g o magnesium powder and 50 cm3 o 2 mol

dm-3 hydrochloric acidII 4 g o magnesium powder and 50 cm3 o 1 mol

dm-3 hydrochloric acid Which o he ollowing he ollowing graphs represen s he

wo experimen s?

A. C.

B. D.

33. Which o he ollowing is rue abou manu ac uredsubs ances in indus ry and i s uses?

Manu ac ured subs ance in indus ry Uses A. Poly hene LensesB. Lead glass Mirror

C. Pho ochromic glass Op ical lensesD. Plas ic rein orced wi h glass es ube

34. Which o he ollowing reac an s will give he highes ira e o reac ion?

A. Excess o magnesium powder and 20 cm3 o 1 mol dm-3 hydrochloric acid

B. Excess o magnesium powder and 20 cm3 o 2 mol dm-3 hydrochloric acid

C. Excess o magnesium powder and 20 cm3 o 1 mol dm-3sulphuric acid

D. Excess o magnesium powder and 20 cm3 o 2 mol dm-3sulphuric acid

35. Diagrambelowshows heappara usse -upused os udy herareac iono calciumcarbona e and hydrochloric acid.

Te ra e o he above reac ion can be increased by

A. Grinding the marble chipsB. Lowering he empera ure o hydrochloric acidC. Using a larger ask

D. Adding wa er o hydrochloric acid

36. Name he compound below using IUPAC nomencla ure.

A. 2,3-dime hyl pen an-2-olB. 2,2-dime hyl pen an-2-olC. 3,3-dime hyl pen an-2-olD. 3,3-dime hyl pen an-4-ol

37. Te ollowing equa ion represen s a reac ion o prepare anes er.

P + CH3CH2COOH CH3CH2COOCH2CH2CH3 + H2O

Name he compound P.

A. E hanolB. Me hanolC. Bu anolD. Propanol

Volume of gas/cm 3

Time / s

I

II

Volume of gas/cm 3

Time / s

I

II

Volume of gas/cm 3

Time / s

I

II

Volume of gas/cm 3

Time / s

I

II

Hydrochloric acidand calciumcarbonate


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38. Which o he ollowing s a emen s is rue abou a ?

I Sa ura ed a can be conver ed o unsa ura ed a by hydrogena ion process.

II Fa orm rom he reac ion be ween glycerol andaty acid

III Palm oil is an example unsa ura ed aIV Fa is a na ural es er

A. I, II and IIIB. I, III and IV C. II, III and IV D. I, II, III and IV

39. Which o he ollowing is an oxida ion process?

A. Propene changes in o propaneB. Lead(II) oxide loses i s oxygenC. Magnesiuma om ormsmagnesiumion.D. Chlorine molecule gains elec rons.

40. When he propan-1-ol is oxidized by using acidi ed po assiumdichroma e(VI), compound X is produced. Which o he

ollowing s a emen is rue abou compound X?

A. Te ormula o compound X is C3H7COOHB. Compound X can conduc elec rici y C. Compound X can urn red li mus paper o blueD. Compound X is propene

Gel + potassium hexacyanoferrat (III) +phenolph halein

Iron nail is coiled wi h me al X

41. When he iron nail was coiled wi h me al X, afer a ew dayshe blue colour was observed around he iron nail. Which o he ollowing me al migh be me al X?

A. MagnesiumB. ZincC. AluminiumD. Lead

42. Reac ion be ween iron(II)sulpha e solu ion and brominecan be represen ed by he equa ion below

2 Fe2++ Br2 2Fe3++ 2Br-

Which o he ollowing is rue abou he reac ion?

A. Fe2+is reducedB. Br2is a reducing agenC. Fe2+is an oxidizing agenD. Br2accep s elec rons

Ag+ + Cl- AgCl H = 67.2 kJmol-1

43. Calcula e he change o empera ure when 50 cm3 o silverni ra e solu ion 0.1 moldm-3 is added o 50 cm3 o dilu ehydrochloric 0.1 moldm-3.

A. 0.42oC

B. 0.84o

CC. 0.56oCD. 0.80oC

C6H12O6 + 6O2 6CO2 + 6H2O H = 2500 kJmol-1

44. Calcula e he hea change when 90 g o glucose is burncomple ely in excess oxygen.[ Rela ive A omic Mass : C, 12 ; H, 1 ; O, 16]

A. 500 kJB. 2500 kJ

C. 5000 kJD. 1250 kJ

45. Te ollowing equa ion shows he reac ion or he ormao lead(II) sulpha e sal .

Pb2+ + SO42- PbSO4 H = 42kJmol-1

Which o he ollowing is rue abou his reac ion?

Hea change ype o reac ion

A. Hea is released Endo hermicB. Hea is absorbed Exo hermicC. Hea is released Exo hermicD. Hea is absorbed Endo hermic


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46. Which o he ollowing he molecules is soap?

A. CH3(CH2)14COOHB. CH3(CH2)14COONaC. CH3(CH2)15COOCH3D. CH3(CH2)2OH

47. Ali acing a lo o amily problems and he is under depression.He canno sleep normally or he las wo weeks. Which o he

ollowing medicine could be sui able o rea him?

A. CodeineB. Barbi ura eC. Parace amolD. S rep omycin

48. Vinegar is used widely in rui pickle indus ry. Which ype o ood addi ive is represen ed by vinegar?

A. Colouring agenB. TickenerC. An ioxidanD. Preserva ive

49. Which o he ollowing charac eris ics shows ha sal isui able used as ood preserva ive

A. Sal inessB. Dehydra ing proper y C. Easy o ndD. oxici y

50. Dry hydrogen chloride gas is passed hrough me hyl benzenor a ew minu es. Which o he ollowing s a emen s i

abou he liquid produced?

I i has a pH value o less han 7II i consis s o hydrogen chloride moleculesIII i changes blue li mus o redIV i does no conduc elec ric curren

A. I and III only B. II and IV only C. I, II and III only D. I, II , III and IV

END OF QUES ION PAPER


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SEC ION A Answer All Ques ions

1. Diagram 1 shows he wo ypes o monomer X and Y.

Diagram 1

(a) Polymer is made up rom he combining o repea ed small uni s called monomer. Name he process orming o _____________________________________________________________________ [1 mark]

(b) (i) Polymer X is widely used in our daily li e. Name he monomer o X._____________________________________________________________________ [1 mark]

(ii) S a e one uses o polymer X in our daily li e._____________________________________________________________________ [1 mark]

(c) Polymer Y is used o replace me al pipe.

(i) Draw he s ruc ure o polymer Y.

[2 marks]

(ii) S a e one advan age o uses o polymer Y han me al pipe. _____________________________________________________________________ [1 mark]

(d) Te uses o syn he ic polymer can cause environmen al pollu ion. Explain how syn he ic polymer can causeenvironmen al pollu ion?_____________________________________________________________________ _____________________________________________________________________ [2 marks]

(e) Rubber is an example o na ural polymer. Name he monomer o na ural rubber._____________________________________________________________________ [1 mark]

H H

H C = C H

Cl H

H C = C H


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2. able 1 shows he elemen s in period 3 in Periodic able.

Elemen Na Mg Al Si P S Cl ArPro on number 11 12 13 14 15 16 17 18

able 1(a) Wha is mean by pro on number?

_____________________________________________________________________ [1 mark]

(b) How does he a omic size change across he period 3? Explain your answer._____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ [3 marks]

(c) Magnesium a om can orm magnesium ion. S a e he number o pro ons and elec rons in magnesium ion?

Pro ons :_________________________________________________________Elec rons :_________________________________________________________ [2 marks]

(d) Sulphur, S reac s wi h hydrogen o orm a compound.(i) Name he ype o chemical bond in he compound ormed_____________________________________________________________________ [1 mark]

(ii) Wri e he ormula or he compound ormed._____________________________________________________________________ [1 mark]

(iii) Calcula e he Rela ive Molecular Mass or he compound ormed in (c)(ii).[ Rela ive A omic Mass : S, 32 ; H, 1]

_____________________________________________________________________ [1 mark]

(e) (i) S a e he elemen which reac s wi h wa er o produce acidic solu ion?_____________________________________________________________________ [1 mark]

(ii) Name he acid ha produced in (e)(i). _____________________________________________________________________ [1 mark]

3. Diagram 2 shows he appara us se up or he elec rolysis o silver chloride solu ion by using carbon elec rodes.

Diagram 2

Carbon electrode X

A

silver chloride solution

Carbon electrode Y


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(a) S a e he meaning o elec rolysis._____________________________________________________________________ [2 marks]

(b) Te yellow greenish gas is release a carbon elec rode Y.(i) Name he gas released._____________________________________________________________________ [1 mark]

(ii) Explain why he gas you men ion in (b)(i) is released?_____________________________________________________________________ _____________________________________________________________________ [2 marks]

(iii) Wri e he hal equa ion occur in carbon elec rode Y._____________________________________________________________________ [ 2 marks]

(c) Te experimen is repea ed by replacing carbon elec rodes silver elec rodes..(i) S a e he observa ion a X._____________________________________________________________________ [1 mark]

(ii) Name he produc a anode_____________________________________________________________________ [1 mark]

(iii) S a e he ac or ha a ec ing he produc a anode?_____________________________________________________________________ [1 mark]

4. Diagram 3 shows he s eps in he prepara ion o copper(II) carbona e sal .

S ep 1 S ep 2Copper(II) oxide Solu ion o sal X Copper (II) carbona e

+ Sulphuric acid + Solu ion Y Diagram 3

(a) S a e he colour o copper(II) carbona e._____________________________________________________________________ [1 mark]

(b) Name sal X._____________________________________________________________________ [1 mark]

(c) (i) Sugges solu ion Y ha is required o be added o solu ion o sal X o produce copper(II) carbona e._____________________________________________________________________ [1 mark]

(ii) Name he reac ion o produce copper(II) carbona e in s ep II._____________________________________________________________________ [1 mark]

(d) 30 cm3 o 0.2 mol dm-3sulphuric acid reac s wi h excess copper(II) oxide.(i) Wri e he chemical equa ion or he reac ion ha akes place._____________________________________________________________________ [2 marks]


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(ii) Calcula e he mass o sal X ha is produced.[ Rela ive A omic Mass; Cu, 64 ; S, 32 ; O, 16]

[3 marks](e) Describe brie y how you can conver copper(II) carbona e o copper(II) oxide.

_____________________________________________________________________ [1 mark]

5. Diagram 4 shows he change o a compound P in o ano her compound hrough he several processes.

Diagram 4

(a) Compound P is produced rom he hydra ion o propene.(i) S a e he unc ional group o P._____________________________________________________________________ [1 mark]

(ii) Draw he isomers o compound P.

[2marks]

(b) Compound P reac wi h e hanoic acid o orm compound Q and wa er.(i) Name he process X._____________________________________________________________________ [1 mark]

(ii) Name he compound Q._____________________________________________________________________ [1 mark]

(c) 3.0 g o compound P is burn comple ely in excess oxygen.

(i) Wri e he chemical equa ion or his reac ion._____________________________________________________________________ [2 marks]

(ii) Calcula e he volume o oxygen gas needed a room condi ion o burn compound P comple ely.[ Rela ive A omic Mass : C, 12 ; O, 16 ; H, 1;1( mol gas occupied 24 dm3 a room condi ion)

[3 marks]


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6. Te hermochemical below represen s he combus ion reac ion o bu anol in he excess oxygen.

C4H9OH + 6O2 4CO2 + 5H2O H = -2679 kJmol-1

(a) S a e he meaning o hea o combus ion._____________________________________________________________________ [1 mark]

(b) 0.37 g o he bu anol is used o hea 500 cm3 o wa er.Calcula e:(i) Te hea released in his experimen .

[Rela ive A omic Mass : C, 12 ; H, 1 ; O, 16]

[2 marks]

(ii) Te empera ure change o wa er.[speci c hea capaci y o wa er, c = 4.2 Jg-1 0C-1]

[2 marks]

(c) Draw he energy level diagram or his reac ion.

[2 marks]

(d) Te hea o combus ion o propanol rom experimen ac ually lower han he ac ual value. S a e wo reason_____________________________________________________________________ _____________________________________________________________________ [2 marks]

(e) Te experimen is repea ed by using bu anol o replace propanol. Predic he hea o combus ion o bu anol? _____________________________________________________________________ _____________________________________________________________________ [2 marks]


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SEC ION B[20 marks]

Answer any one ques ion rom his sec ion

7. (a) By name one example, explain wha is :(i) Dipro ic acid(ii) Monopro ic acid. [4 marks]

(b) S a e wo chemical proper ies o acid. For he each proper ies, wri e he chemical equa ion involved.

(d) Describe how o prepare 250 cm3 o 1.0 mol dm-3po assium hydroxide s ar ing rom solid po assium hydroxide.In your explana ion, shows also calcula ion s eps.[Rela ive A omic Mass ; K, 39 ; O, 16 ; H, 1] [10 marks]

8. (a) E hane is an example o sa ura ed hydrocarbon and e hene is an example o unsa ura ed hydrocarbon.(i) Describe he chemical es how o di eren ia e be ween e hane and e hane. [6 m

(ii) By comparing he percen age o carbon be ween e hane and e hene, explain which compound producesmore soo iness? [4 marks]

(iii) E hene can be conver ed o e hane. Name he process involved and wri e he chemical equa ion orhis reac ion. [3 marks]

(b) Compare he proper ies o vulcanized rubber and unvulcanized rubber. Your answer should include he ollowin(i) Elas ici y (ii) Resis ance oward oxida ion(iii) Resis an oward high empera ure.

Give the reasons for the each property.


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SEC ION C[20 marks]

Answer any one ques ion rom his sec ion

9. (a) Ammonia is use widely in our daily li e. Ammonia is manu ac ured in indus ry by Harber process.(i) Wri e he equa ion or he orma ion o ammonia hrough he Harber process. [2

(ii) S a e hree condi ion o produce op imum ammonia rom Harber process. [3 ma

(iii) I 7.2 dm3 o hydrogen gas is reac ed wi h ni rogen gas a room condi ion, calcula e he maximumammonia produced? [1 mol gas = 24 dm3 a room condi ion] [3 marks]

(iv) Ammonium ni ra e and ammonium sulpha e are wo common er ilizers made rom ammonia. Which er ilizer is beter or armer? Explain why. [6 m

(b) (i) Sulphuric acid is an example o manu ac ured subs ance in indus ry ha has many uses in our daily li e.S a e hree uses o sulphuric acid. [3 marks]

(ii) Sulphur dioxide gas is emited o he environmen al rom he manu ac ure o sulphuric acid.Explain how sulphur dioxide can cause environmen al pollu ion? [3 marks]

10. (a) able 2 shows wo reac ions and heir equa ion respec ively.

Reac ion Equa ionI Pb(NO3)2 + K 2SO4 2KNO3 + PbSO4

II 2KBr + Cl2 2KCl + Br2able 2

Based on he able 2, which reac ions is redox reac ion and non redox reac ion. Explain your answer in erm ochange in oxida ion number. [4 marks]

(b) Diagram 6 show he se up o appara us o he displacemen reac ion.

From his reac ion:(i) S a e wo observa ions.

(ii) Hal equa ion or oxida ion and reduc ion.

(iii) Oxidizing agen and reducing agen [6 marks]


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(c) (i) S a e he meaning o rus ing.

(ii) Te experimen was carried ou o inves iga e he rus ing o iron when i was coiled using copper andmagnesium s rip as shown in diagram 5.

A Iron nail only

BIron nail coiled wi h copper

CIron nail coiled wi h magnesium

Diagram 5

S a e he observa ion in he es ube A, B and C. Explain why hese observa ions can occur inall he es ubes. [10 marks]



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Answer all ques ions

1. A s uden is carries ou an experimen o s udy he rela ionship be ween concen ra ions o hydrochloric acid wreac ion. Five magnesium ribbons were cu ou and rubbed by using sand paper. 5 cm o magnesium ribbon was adde50 cm3 o hydrochloric acid 0.1 moldm-3 and he s op wa ch was s ar ed immedia ely. ime aken or he magne was recorded. Te experimen was repea ed by replacing 0.1 moldm-3 o hydrochloric acid wi h 0.2 moldm-3, 0.3 mol0.4 moldm-3, and 0.5 moldm-3 hydrochloric acid. Diagram below shows he ime aken or he magnesium ribbon comple ely.

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0.1 moldm-3ime aken : .________ s

0.2 moldm-3ime aken : .________ s

0.3 moldm-3

ime aken : .________ s0.4 moldm-3

ime aken : .________ s

0.5 moldm-3

ime aken : .________ s


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(a) Record he ime aken or he magnesium ribbon o dissolve comple ely. [3 ma

(b) Cons ruc he able o record he ime aken and 1/ ime or he each experimen .

[3 marks](c) Wri e he chemical equa ion be ween magnesium ribbon and hydrochloric acid.

_____________________________________________________________________ [3 marks]

(d) S a e he hypo hesis or his experimen ._____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ [3 marks]

(e) S a e he:

(i) Manipula ed variable : __________________________________________________

(ii) Responding variable : __________________________________________________

(iii) Cons an variable : __________________________________________________ [3 marks]

( ) Plo he graph concen ra ion o hydrochloric acid agains 1/ ime. [3 ma

(g) I he experimen is repea ed by replacing 50 cm3 o 0.1 moldm-3 hydrochloric acid wi h 50 cm3 o 0.1 moldmsulphuric acid, predic or he ime aken or 5 cm o magnesium ribbon o dissolve comple ely. Explain why_____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________

_____________________________________________________________________ [3 marks](h) Using collision heory, explain how he concen ra ion o hydrochloric acid a ec s he ra e o reac ion.

_____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ [3 marks]


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(i) Diagram below shows he pH values or several acids wi h di erence concen ra ion.

Acid pH values0.1 moldm-3 o hydrochloric acid 20.1 moldm-3 o e hanoic acid 5

Explain why he pH values be ween hese wo acids are di eren ._____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ [3 marks]

(j) You are given hydrochloric acid, e hanoic acid, sulphuric acid, ni ric acid and ci ric acid.Classi y hese all acid in o s rong acids and weak acids.

[3 marks]

Pure copper can be bent easily, but bronze are very hard and cannot be bent easily

2. Re erring he s a emen above, plan an experimen in he lab o inves iga e he e ec o alloying owards heme al han i alloy. Your answer should consis o he ollowing:

(i) Problem s a emen(ii) Hypo hesis(iii) All he variables(iv) Lis o subs ances and appara us(v) Procedures(vi) abula ion o da a. [17 marks]


Times 2011 Kimia Soalan

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