CHEMISTRY STANDARD LEVEL PAPER 1...May 08, 2012 · • The periodic table is provided for...

2212-6116 15 pages

M12/4/CHEMI/SPM/ENG/TZ2/XX

Tuesday 8 May 2012 (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 2012

22126116

2212-6116

–2– M12/4/CHEMI/SPM/ENG/TZ2/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. Whatisthetotalnumberofatomsin0.100molof[ ( ) ]Pt NH Cl3 2 2 ?

A. 11

B. 6 02 1022

. ×

C. 3 01 1023

. ×

D. 6 62 1023

. ×

2. Nitroglycerine,C H N O3 5 3 9

,canbeusedinthemanufactureofexplosives. Whatis thecoefficientofC H N O l3 5 3 9 ( ) when the equation for its decomposition reaction is balanced using the lowestwholenumbers?

___ ( ) ___ ( ) ___ ( ) ___ ( ) ___ ( )C H N O l CO g H O l N g O g3 5 3 9 2 2 2 2→ + + +

A. 2

B. 4

C. 20

D. 33

3. The volume occupied by one mole of an ideal gas at 273K and 1 01 105. × Pa is 22.4dm3.Whatvolume,indm3,isoccupiedby3.20gO2(g)at273Kand1 01 10

5. × Pa?

A. 2.24

B. 4.48

C. 22.4

D. 71.7

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4. Whatvolume,inm3,isoccupiedby2.00molofgasat 27 °C and2.00atmpressure?Assume:1.00atm 51.01 10 Pa= × andR = − −8 31 1 1. J K mol .

A. 8 31 27

1 01 105

.

.

××

B. 2 00 8 31 27

1 01 105

. .

.

× ××

C. 2 00 8 31 300

2 00 1 01 105

. .

. .

× ×× ×

D. 2 00 8 31 300

1 01 105

. .

.

× ××

5. Whichstatementsaboutsolutionsarecorrect?

I. Asolutedissolvesinasolventtoformasolution.

II. Asolutionisahomogeneousmixtureoftwoormoresubstances.

III. Concentrationsofsolutionscanbeexpressedingdm–3.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

6. Whichsubatomicparticlesarelocatedinthenucleusofanatom?

A. Protonsandelectrons

B. Neutronsandelectrons

C. Protonsandneutrons

D. Protons,neutronsandelectrons

2212-6116

–5–

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7. Whatisthenameofthetypeofspectrumconsistingonlyofspecificwavelengths?

A. Electromagnetic

B. Continuous

C. Line

D. Mass

8. Whichstatementsarecorrectforsilicon?

I. Itselectronarrangementis2,8,4.

II. Ithasfourelectronsinitshighestoccupiedenergylevel.

III. Inthesolidstate,eachsiliconatomiscovalentlybondedtofourothersiliconatomsinatetrahedralarrangement.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

9. Whichseriesiscorrectlyarrangedinorderofdecreasingradius?

A. Al3+>Mg2+>Na+>F–

B. F–>Na+>Mg2+>Al3+

C. F–>Al3+>Mg2+>Na+

D. Na+>Mg2+>Al3+>F–

2212-6116


10. Whatistheformulaofmagnesiumnitride?

A. Mg2N3

B. Mg3N2

C. Mg(NO3)2

D. Mg(NO2)2

11. Whichsinglecovalentbondisthemostpolar,giventhefollowingelectronegativityvalues?

Element H C S O

Electronegativity 2.2 2.6 2.6 3.4

A. C–O

B. S–H

C. C–H

D. O–H

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12. TheLewis(electrondot)structureofparacetamol(acetaminophen)is:

CC C

CC

CH

N

O

H

H

H H

OH

β

α

θ

CH

H

H

Whataretheapproximatevaluesofthebondangles?

α β θ

A. 104 5.

120

109 5.

B. 109 5.

109 5.

109 5.

C. 120

120

90

D. 104 5.

120

90

13. C60fullereneconsistsofasimplemolecularstructure.Silicondioxide,SiO2,canbedescribedasagiantcovalent(macromolecular)structure.Whichstatementsarecorrect?

I. EachcarbonatominC60fullereneisbondedinasphereof60carbonatoms,consistingofpentagonsandhexagons.

II. EachO–Si–ObondangleinSiO2is180.

III. SiO2isinsolubleinwater.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

2212-6116


14. WhichtypesofintermolecularforcesexistinHBr,Cl2andCH3F?

HBr Cl2 CH3F

A. vanderWaals’anddipole-dipole vanderWaals’only vanderWaals’and

dipole-dipole

B. vanderWaals’anddipole-dipole vanderWaals’only vanderWaals’,dipole-dipole

andhydrogenbonding

C. vanderWaals’only vanderWaals’only vanderWaals’,dipole-dipoleandhydrogenbonding

D. vanderWaals’anddipole-dipole

vanderWaals’anddipole-dipole

vanderWaals’,dipole-dipoleandhydrogenbonding

15. A simple calorimeterwas set up to determine the enthalpy change occurringwhen onemole ofethanoliscombusted. Theexperimentalvaluewasfoundtobe–867kJmol–1. TheDataBookletvalueis–1367kJmol–1(at298Kand1 01 105. × Pa).

Duringtheexperimentsomeblacksootformed.

Whichstatementsarecorrect?

I. Thepercentageerrorfortheexperimentcanbecalculatedasfollows:( ) %1367 867 100− ×

II. Thedifferencebetweenthetwovaluesmaybeduetoheatlosstothesurroundings.

III. Theblacksootsuggeststhatincompletecombustionoccurred.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

2212-6116

–9–

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16. Considertheequations:

N g H g N H l2 2 2 42( ) ( ) ( )+ → ∆ = + −H Ö 50 6. kJ mol 1

N H l N H g2 4 2 4( ) ( )→ ∆ = + −H Ö 44 8. kJ mol 1

Whatis∆H Ö,inkJ,forthefollowingreaction?

N g H g N H g2 2 2 4

2( ) ( ) ( )+ →

A. –95.4

B. –5.80

C. +5.80

D. +95.4

17. Whichareappropriateunitsfortherateofareaction?

A. moldm–3s–1

B. moldm–3s

C. moldm–3

D. s

2212-6116


18. The following enthalpy level diagram shows the effect of the addition of a catalyst on achemicalreaction.Whatdom,nandorepresent?

Enthalpy

m

no

Products

Reactants

Progressofreaction

m n o

A. ∆H Ea(withoutacatalyst) Ea(withacatalyst)

B. Ea(withacatalyst) ∆H Ea(withoutacatalyst)

C. Ea(withacatalyst) Ea(withoutacatalyst) ∆H

D. ∆H Ea(withacatalyst) Ea(withoutacatalyst)

19. Whatistheequilibriumconstantexpression,Kc,forthefollowingreaction?

2 22

NOBr g NO g Br g( ) ( ) ( ) +

A. Kc

NO Br

NOBr= [ ] [ ]

[ ]

2

B. Kc

NO Br

NOBr= [ ] [ ]

[ ]

2

2

2

C. Kc

NO Br

NOBr= +2

2

2[ ] [ ]

[ ]

D. Kc

NOBr

NO Br= [ ]

[ ] [ ]

2

2

2

2212-6116

–11–

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20. WhathappenstothepositionofequilibriumandthevalueofKcwhenthetemperatureisincreasedinthefollowingreaction?

PCl g PCl g Cl g kJ mol 15 3 2 87 9( ) ( ) ( ) . + ∆ = + −H Ö

Position of equilibrium Value of Kc

A. shiftstowardsreactants decreases

B. shiftstowardsreactants increases

C. shiftstowardsproducts decreases

D. shiftstowardsproducts increases

21. WhatistheBrønsted–LowryconjugatebaseofH2PO4–?

A. H3PO4

B. HPO42–

C. PO43–

D. HO–

22. Threeaqueoussolutionsofnitricacidarelistedbelow.

W. 0.100moldm–3HNO3(aq)

X. 0.001moldm–3HNO3(aq)

Y. 0.010moldm–3HNO3(aq)

WhatisthecorrectorderofincreasingpHofthesesolutions?

A. W<X<Y

B. W<Y<X

C. X<W<Y

D. X<Y<W

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23. WhatisthenameofCu2S?

A. Copper(I)sulfide

B. Copper(I)sulfate

C. Copper(II)sulfide

D. Copper(II)sulfate

24. Considerthefollowingreaction:

3 2 2 32

2 7

2 3

2 2Sn aq Cr O aq H aq Cr aq SnO s H O l+ − + ++ + → + +( ) ( ) ( ) ( ) ( ) ( )

Whichstatementiscorrect?

A. Sn2+istheoxidizingagentbecauseitundergoesoxidation.

B. Sn2+isthereducingagentbecauseitundergoesoxidation.

C. Cr2O72–istheoxidizingagentbecauseitundergoesoxidation.

D. Cr2O72–isthereducingagentbecauseitundergoesoxidation.

25. Whatoccursduringtheoperationofavoltaiccellbasedonthefollowingoverallreaction?

2 22

Ag aq Cu s Ag s Cu aq+ ++ → +( ) ( ) ( ) ( )

External circuit Ion movement in solution

A. electronsmovefromCu(s)toAg(s) Ag+(aq)movetowardsCu(s)

B. electronsmovefromAg(s)toCu(s) Ag+(aq)movetowardsAg(s)

C. electronsmovefromCu(s)toAg(s) Ag+(aq)movetowardsAg(s)

D. electronsmovefromAg(s)toCu(s) Cu2+(aq)movetowardsCu(s)

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–13–

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26. Considerthecompound(CH3CH2)CH=CH(CH3).Whichstatementsarecorrect?

HH

HH

HH

H

H

H H

C C

C

CC

I. Asuitablenameispent-2-ene.

II. TheempiricalformulaisCH2.

III. Anisomerofthecompoundispentane.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

2212-6116


27. Diamorphine (heroin) contains several different functional groups. Which of the following twofunctionalgroupsarepresentindiamorphine?

H

H

HC

CO

O

O

O

CC

C

C

CC

H

H

H

H

H

H

HH

HH

HH

H

HH

H

H

H

C

CCCC

CC

CC

C

N

C

C

C

H

H

O

H

H

C

A. ester,benzenering

B. ketone,benzenering

C. aldehyde,alkene

D. ketone,alkene

2212-6116


28. Whichcompoundhasthelowest boilingpoint?

A. CH3CH2CH2OH

B. CH3CH2CH2Br

C. CH3CH2COOH

D. CH3CH2CH2CH3

29. Whichorganiccompounds,QandP,areformedinthefollowingtwo-stagereactionpathway?

Stage1: CH3(CH2)3ClNaOH(aq)

heat→ Q

Stage2: Q272Cr O (aq)/H (aq)reflux− +

→ P

Q P

A. CH3(CH2)3OH CH3(CH2)3COOH

B. CH3(CH2)3OH CH3(CH2)2COOH

C. CH3CH2CH=CH2 noreactionproductformed

D. CH3(CH2)3OH CH3(CH2)2CHO

30. The relationship between the pressure, P, and the volume, V, of a fixed amount of gas at aconstanttemperatureisinvestigatedexperimentally.Whichstatementsarecorrect?

I. AgraphofVagainstPwillbeacurve(non-linear).

II. AgraphofVagainst 1Pwillbelinear.

III. V=constant1P

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

CHEMISTRY STANDARD LEVEL PAPER 1...May 08, 2012 · • The periodic table is provided for...

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Transcript of CHEMISTRY STANDARD LEVEL PAPER 1...May 08, 2012 · • The periodic table is provided for...