2213-6110 14 pages

M13/4/CHEMI/SPM/ENG/TZ1/XX

Thursday 16 May 2013 (afternoon)

CHEMISTRYSTANDARD LEVELPAPER 1

INSTRUCTIONS TO CANDIDATES

• Do not open this examination paper until instructed to do so.• Answer all the questions.• For each question, choose the answer you consider to be the best and indicate your choice on

the answer sheet provided.• The periodic table is provided for reference on page 2 of this examination paper.• The maximum mark for this examination paper is [30 marks].

45 minutes

© International Baccalaureate Organization 2013

22136110

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–2– M13/4/CHEMI/SPM/ENG/TZ1/XX

88 Ra

(226

)

56 Ba13

7.34

38 Sr87

.62

20 Ca

40.0

8

12 Mg

24.3

1

4 Be 9.012

‡†

89 ‡

Ac

(227

)

57 †

La13

8.91

39 Y88

.91

21 Sc 44.9

6

90 Th23

2.04

58 Ce

140.

12

72 Hf

178.

49

40 Zr 91.2

2

22 Ti47

.90

91 Pa23

1.04

59 Pr14

0.91

73 Ta18

0.95

41 Nb

92.9

1

23 V50

.94

92 U23

8.03

60 Nd

144.

24

74 W18

3.85

42 Mo

95.9

4

24 Cr

52.0

0

55 Cs

132.

91

37 Rb

85.4

7

19 K39

.10

11 Na

22.9

9

3 Li 6.941 H 1.011 Fr87 (223

)

Ato

mic

num

ber

Elem

ent

Rela

tive

atom

ic m

ass

93 Np

(237

)

61 Pm14

6.92

75 Re

186.

21

43 Tc 98.9

1

25 Mn

54.9

4

94 Pu (242

)

62 Sm15

0.35

76 Os

190.

21

44 Ru

101.

07

26 Fe 55.8

5

95 Am

(243

)

63 Eu15

1.96

77 Ir19

2.22

45 Rh

102.

91

27 Co

58.9

3

96 Cm

(247

)

64 Gd

157.

25

78 Pt19

5.09

46 Pd10

6.42

28 Ni

58.7

1

97 Bk (247

)

65 Tb15

8.92

79 Au

196.

97

47 Ag

107.

87

29 Cu

63.5

5

The

Peri

odic

Tab

le

98 Cf

(251

)

66 Dy

162.

50

80 Hg

200.

59

48 Cd

112.

40

30 Zn 65.3

7

99 Es (254

)

67 Ho

164.

93

81 Tl20

4.37

49 In11

4.82

31 Ga

69.7

2

13 Al

26.9

8

5 B10

.81

3

100

Fm (257

)

68 Er16

7.26

82 Pb20

7.19

50 Sn11

8.69

32 Ge

72.5

9

14 Si28

.09

6 C12

.01

4

101

Md

(258

)

69 Tm16

8.93

83 Bi20

8.98

51 Sb12

1.75

33 As

74.9

2

15 P30

.97

7 N14

.01

5

102

No

(259

)

70 Yb

173.

04

84 Po (210

)

52 Te12

7.60

34 Se78

.96

16 S32

.06

8 O16

.00

6

103

Lr (260

)

71 Lu17

4.97

85 At

(210

)

53 I12

6.90

35 Br 79.9

0

17 Cl

35.4

5

9 F19

.00

7

86 Rn

(222

)

54 Xe

131.

30

36 Kr

83.8

0

18 Ar

39.9

5

10 Ne

20.1

8

2 He

4.000

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1. WhichstatementsarecorrectaboutAvogadro’sconstant?

I. Itisthenumberofionsin12gofsodiumhydride,NaH.

II. Itisthenumberofmoleculesin22.4dm3ofhydrogengasat0 C° and1atm.

III. Itisthenumberofatomsin12gof12C.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

2. Whatisthemolarmass,ingmol–1,ofasubstanceif0.30molofthesubstancehasamassof18g?

A. 5.4

B. 6.0

C. 30

D. 60

3. Whatisthewholenumberratioofthecoefficientsofammoniatooxygenwhenthefollowingequationisbalancedcorrectly?

3 2 2___ NH (g) ___O (g) ___ NO(g) ___ H O(l)+ → +

A. 1:2

B. 2:1

C. 4:5

D. 5:4

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4. When50cm3ofahydrocarbon,CxHy,wasburnedinexcessoxygen,200cm3ofcarbondioxideand

250cm3ofsteamwereproduced(allvolumesweremeasuredunderthesameconditions).Whatisthemolecularformulaofthehydrocarbon?

A. C2H4

B. C3H8

C. C4H8

D. C4H10

5. What is thepressure, inPa, in a 100cm3 container containing1.8gof steamat a temperature of727 C° ?(R=8.31JK–1mol–1)

A. 1.8 8.31 72718 100× ×

×

B. 18 1001.8 8.31 727

×× ×

C. 4

1.8 8.31 100018 10−× ×

×

D.4

1.8 8.311.8 10 1000−

×× ×

6. Whichstatementsabouttheisotopesofanelementarecorrect?

I. Theyhavethesamechemicalproperties.

II. Theyhavedifferentphysicalproperties.

III. Theyhavethesamenumberofprotonsandelectrons.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

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7. Whichdiagramshowsapatternsimilartotheemissionspectrumofhydrogen?

Increasingwavelength

A.

B.

C.

D.

8. Whichstatementconcerningelectronegativityiscorrect?

A. Electronegativityincreasesfromlefttorightacrossaperiod.

B. Metalsgenerallyhavehigherelectronegativityvaluesthannon-metals.

C. Electronegativityincreasesondescendingagroup.

D. Noblegaseshavethehighestelectronegativityvalues.

9. Whichstatementsarecorrect?

I. Fluorinewillreactwithpotassiumchloridesolutiontoproducechlorine.

II. Iodinewillreactwithsodiumchloridesolutiontoproducechlorine.

III. Brominewillreactwithlithiumiodidesolutiontoproduceiodine.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

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10. Whichstatementbestdescribesionicbonding?

A. Itistheelectrostaticattractionbetweenpositiveionsanddelocalizedelectronsandoccursbythetransferofelectrons.

B. Itistheelectrostaticattractionbetweenpositiveionsandnegativeionsandoccursbythetransferofelectrons.

C. Itistheelectrostaticattractionbetweenpositiveionsandnegativeionsandoccursbythesharingofelectrons.

D. Itistheelectrostaticattractionbetweenpositivenucleiandelectronsandoccursbythesharingofelectrons.

11. Whatarethecorrectformulasofthefollowingions?

Nitrate Sulfate Phosphate Hydrogencarbonate

A. NO3– SO4

2– PO43– HCO3

–

B. NO3– SO4

2– PO33– HCO3

2–

C. NO2– SO4

– PO43– HCO3

–

D. NO2– SO3

2– PO33– HCO3

2–

12. Whichstatementsconcerningthesodiumchlorideioniclatticearecorrect?

I. Sodiumionsarelargerthanchlorideions.

II. Eachsodiumionissurroundedbysixchlorideions.

III. Eachchlorideionissurroundedbysixsodiumions.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

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13. Whichcombinationbestdescribesthetypeofbondingpresentandthemeltingpointofsiliconandsilicondioxide?

Silicon Silicon dioxide

A. covalentbonding highmeltingpoint covalentbonding highmeltingpoint

B. metallicbonding highmeltingpoint covalentbonding lowmeltingpoint

C. ionicbonding highmeltingpoint ionicbonding lowmeltingpoint

D. covalentbonding lowmeltingpoint ionicbonding highmeltingpoint

14. Whichstatementsarecorrectabouthydrogenbonding?

I. Itisanelectrostaticattractionbetweenmolecules.

II. Itispresentinliquidammonia.

III. Itisapermanentdipole-permanentdipoleattraction.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

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15. Whichstatementiscorrectfortheenthalpyleveldiagramshown?

Enthalpy

Courseofthereaction

A. Thereactionisexothermicandtheproductsaremorestablethanthereactants.

B. Thereactionisexothermicandthesignoftheenthalpychangeispositive.

C. Thereactionisendothermicandthesignoftheenthalpychangeisnegative.

D. Thereactionisendothermicandtheproductsaremorestablethanthereactants.

16. Whichcombinationiscorrectabouttheenergychangesduringbondbreakingandbondformation?

Bond breaking Bond formation

A. exothermic exothermic

B. exothermic endothermic

C. endothermic exothermic

D. endothermic endothermic

Enthalpyofreactants

Enthalpyofproducts

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17. WhichgraphbestrepresentstherelationshipbetweentheaveragekineticenergyofmoleculesofagasandtemperatureinK?

A. B.

Averagekineticenergy

Averagekineticenergy

Temperature/K Temperature/K

C. D.

Averagekineticenergy

Averagekineticenergy

Temperature/K Temperature/K

18. Whichstatementbestdescribesandexplainstheeffectofacatalystontherateofachemicalreaction?

A. Therateincreasesbecausethefrequencyofcollisionsbetweenparticlesincreases.

B. Therateincreasesbecausemorecollidingparticleshavetheenergyneededtoreact.

C. Therateincreasesbecausetheactivationenergyincreases.

D. Therateincreasesbecausemoremoleculesarepresent.

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19. Thevalueoftheequilibriumconstant,Kc,forareactionis1.0× 10–10. Whichstatementaboutthe

extentofthereactioniscorrect?

A. Thereactionhardlyproceeds.

B. Thereactiongoesalmosttocompletion.

C. Theproductshaveahigherconcentrationthanthereactants.

D. Theconcentrationsofreactantsandproductsarethesame.

20. Whichchangesoccurwhenthetemperatureisdecreasedinthefollowingequilibrium?

2 22BrCl (g) Br (g) Cl (g)+� –14kJH =Öë

Position of equilibrium Value of Kc

A. shiftstotheright decreases

B. shiftstotheright increases

C. shiftstotheleft decreases

D. shiftstotheleft increases

21. Whichisacharacteristicpropertyofsodiumoxide?

A. Itturnsmoistbluelitmuspaperred.

B. Itturnsmoistredlitmuspaperblue.

C. WhenitdissolvesindistilledwateritformsasolutionwithpHlessthan7.

D. Itreactswithmagnesiummetal.

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22. AsolutionofacidHXhasapH=1andasolutionofacidHYhasapH=3.Whichstatementmust becorrect?

A. HXisastrongeracidthanHY.

B. HYisastrongeracidthanHX.

C. The[H+]inthesolutionofHXis100timesgreaterthanthe[H+]inthesolutionofHY.

D. The[H+]inthesolutionofHYis100timesgreaterthanthe[H+]inthesolutionofHX.

23. Whichstatementiscorrectaboutareducingagent?

A. Itisreducedbygainingelectrons.

B. Itisoxidizedbygainingelectrons.

C. Itisoxidizedbylosingelectrons.

D. Itisreducedbylosingelectrons.

24. WhatisthecorrectincreasingorderofreactivityofthemetalsX,YandZbasedonthefollowinginformation?

2 2XCl Y YCl X+ → +

2 2ZCl X XCl Z+ → +

2YCl Z noreaction+ →

A. Z<X<Y

B. Y<X<Z

C. Z<Y<X

D. X<Z<Y

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25. WhatisthenameofthefollowingmoleculeapplyingIUPACrules?

A. 1,1-dimethylbutane

B. Hexane

C. 2-methylpentane

D. 4-methylpentane

26. Howmanynon-cyclicstructuralisomersexistwiththemolecularformulaC5H10?

A. 2

B. 3

C. 4

D. 5

HH

HH

HH

H

H

HH

H

H

H

H

C

C

CC

C

C

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27. Whichstepsareinvolvedinthefree-radicalmechanismofthebrominationofethaneinthepresenceofultravioletradiation?

I. 2 6 2 5C H Br C H HBr+ → +i i

II. 2 5 2 2 5C H Br C H Br Br+ → +i i

III. 2 5 2 5C H Br C H Br+ →i i

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

28. Whichsubstancecanbepolymerizedtoproducethepolymerbelow?

C

CH3

H

C

H

H

C

H

CH3

C

H

H

C

CH3

H

C

H

H

C

H

C

H

HCH3

A. But-1-ene

B. But-2-ene

C. Propene

D. 2-methylpropene

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29. Whichreagentscanbeusedforthetwo-stepconversionofetheneintoethanol?

Step 1 Step 2

A. HBr acidifiedK2Cr2O7

B. HBr aqueousKOH

C. Br2 acidifiedK2Cr2O7

D. Br2 aqueousKOH

30. Which would be the best method to decrease the random uncertainty of a measurement in anacid–basetitration?

A. Ensureyoureyeisatthesameheightasthemeniscuswhenreadingtheburette.

B. Useadifferentindicatorforthetitration.

C. Useadifferentburette.

D. Repeatthetitration.