Thursday 11 November 2010 (afternoon) INSTRUCTIONS TO ......PaPER 1 INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the

8810-6104 15 pages

N10/4/CHEMI/SPM/ENG/TZ0/XX

Thursday 11 November 2010 (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.

45 minutes

© International Baccalaureate Organization 2010

8 8 1 0 6 1 0 4

8810-6104

–2– N10/4/CHEMI/SPM/ENG/TZ0/XX

88Ra

(226)

56Ba

137.34

38Sr

87.62

20Ca

40.08

12Mg

24.31

4Be

9.01

2

‡

†

89 ‡Ac

(227)

57 †La

138.91

39Y

88.91

21Sc

44.96

90Th

232.04

58Ce

140.12

72Hf

178.49

40Zr

91.22

22Ti

47.90

91Pa

231.04

59Pr

140.91

73Ta

180.95

41Nb

92.91

23V

50.94

92U

238.03

60Nd

144.24

74W

183.85

42Mo

95.94

24Cr

52.00

55Cs

132.91

37Rb

85.47

19K

39.10

11Na

22.99

3Li

6.94

1H

1.01

1

Fr87

(223)

Atomic Number

Element

Atomic Mass

93Np

(237)

61Pm

146.92

75Re

186.21

43Tc

98.91

25Mn

54.94

94Pu

(242)

62Sm

150.35

76Os

190.21

44Ru

101.07

26Fe

55.85

95Am

(243)

63Eu

151.96

77Ir

192.22

45Rh

102.91

27Co

58.93

96Cm

(247)

64Gd

157.25

78Pt

195.09

46Pd

106.42

28Ni

58.71

97Bk

(247)

65Tb

158.92

79Au

196.97

47Ag

107.87

29Cu

63.55

The Periodic Table

98Cf

(251)

66Dy

162.50

80Hg

200.59

48Cd

112.40

30Zn

65.37

99Es

(254)

67Ho

164.93

81Tl

204.37

49In

114.82

31Ga

69.72

13Al

26.98

5B

10.81

3

100Fm

(257)

68Er

167.26

82Pb

207.19

50Sn

118.69

32Ge

72.59

14Si

28.09

6C

12.01

4

101Md

(258)

69Tm

168.93

83Bi

208.98

51Sb

121.75

33As

74.92

15P

30.97

7N

14.01

5

102No

(259)

70Yb

173.04

84Po

(210)

52Te

127.60

34Se

78.96

16S

32.06

8O

16.00

6

103Lr

(260)

71Lu

174.97

85At

(210)

53I

126.90

35Br

79.90

17Cl

35.45

9F

19.00

7

86Rn

(222)

54Xe

131.30

36Kr

83.80

18Ar

39.95

10Ne

20.18

2He4.00

0

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

Ato

mic

Mas

s

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

8810-6104

–3–

Turn over


1. WhatisthetotalnumberofnitrogenatomsintwomolofNH4NO3?

A. 4

B. 6 02 1023. ×

C. 1 20 1024. ×

D. 2 41 1024. ×

2. Onanalysis,acompoundwithmolarmass60gmol–1wasfoundtocontain12gofcarbon,2gofhydrogenand16gofoxygen.Whatisthemolecularformulaofthecompound?

A. CH2O

B. CH4O

C. C2H4O

D. C2H4O2

3. EqualmassesofthemetalsNa,Mg,CaandAgareaddedtoseparatesamplesofexcessHCl(aq).WhichmetalproducesthegreatesttotalvolumeofH2(g)?

A. Na

B. Mg

C. Ca

D. Ag

8810-6104


4. Thegraphbelowrepresentstherelationshipbetweentwovariablesinafixedamountofgas.

y

x

Whichvariablescouldberepresentedbyeachaxis?

x-axis y-axis

A. pressure temperature

B. volume temperature

C. pressure volume

D. temperature volume

5. 8.5gofNH3aredissolvedinH2Otopreparea500cm3solution.Whichstatementsarecorrect?

I. NH3isthesoluteandH2Oisthesolution

II. Theconcentrationofthesolutionis17gdm–3

III. [ ] .NH moldm331 0= −

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

8810-6104

–5–

Turn over


6. Whichstatementaboutthespecies63Cu2+and65Cu+iscorrect?

A. Bothspecieshavethesamenumberofprotons.

B. Bothspecieshavethesamenumberofelectrons.

C. Bothspecieshavethesamenumberofneutrons.

D. Bothspecieshavethesameelectronarrangement.

7. Whichstatementabouttheisotopesofanelementiscorrect?

A. Theyhavethesamemassnumber.

B. Theyhaveadifferentatomicnumber.

C. Theyhavethesamechemicalproperties.

D. Theyarelocatedindifferentplacesintheperiodictable.

8. Whichpropertiesofthealkalimetalsdecreasegoingdowngroup1?

A. Firstionizationenergyandreactivity

B. Meltingpointandatomicradius

C. Reactivityandelectronegativity

D. Firstionizationenergyandmeltingpoint

8810-6104


9. Whichstatementsabouttheperiodictablearecorrect?

I. TheelementsMg,CaandSrhavesimilarchemicalproperties.

II. Elementsinthesameperiodhavethesamenumberofmainenergylevels.

III. TheoxidesofNa,MgandParebasic.

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

10. The electronegativities of four different elements are given below (the letters are not theirchemicalsymbols).

Element W X Y Z

Electronegativity 0.9 1.2 3.4 4.0

Basedonthisinformationwhichstatementiscorrect?

A. Wisanon-metal.

B. WandXformanioniccompound.

C. Yisametal.

D. YandZformacovalentcompound.

8810-6104

–7–

Turn over


11. Whichspeciescontainadativecovalentbond?

I. HCHO

II. CO

III. H3O+

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

12. Whichsubstanceismadeupofalatticeofpositiveionsandfreemovingelectrons?

A. Graphite

B. Sodiumchloride

C. Sulfur

D. Sodium

13. Which order is correct when the following compounds are arranged in order of increasingmeltingpoint?

A. CH4<H2S<H2O

B. H2S<H2O<CH4

C. CH4<H2O<H2S

D. H2S<CH4<H2O

8810-6104


14. Whichstatementiscorrectgiventheenthalpyleveldiagrambelow?

H

Courseofthereaction

A. The reaction is endothermic and the products aremore thermodynamically stable than thereactants.

B. The reaction is exothermic and the products are more thermodynamically stable than thereactants.

C. The reaction is endothermic and the reactants aremore thermodynamically stable than theproducts.

D. The reaction is exothermic and the reactants are more thermodynamically stable than theproducts.

8810-6104

–9–

Turn over


15. Identical pieces ofmagnesiumare added to twobeakers,A andB, containinghydrochloric acid.Bothacidshavethesameinitialtemperaturebuttheirvolumesandconcentrationsdiffer.

BeakerA BeakerB

100cm3

1.0moldm–3HCl(aq)200cm3

0.50moldm–3HCl(aq)

0.05gMg 0.05gMg

Whichstatementiscorrect?

A. ThemaximumtemperatureinAwillbehigherthaninB.

B. ThemaximumtemperatureinAandBwillbeequal.

C. ItisnotpossibletopredictwhetherAorBwillhavethehighermaximumtemperature.

D. ThetemperatureinAandBwillincreaseatthesamerate.

16. WhichequationbestrepresentsthebondenthalpyofHCl?

A. HCl g H g Cl g( ) ( ) ( )→ ++ −

B. HCl g H g Cl g( ) ( ) ( )→ +

C. HCl g H g Cl g12 2 2( ) ( ) ( )→ + 1

2

D. 2HCl g H g Cl g2 2( ) ( ) ( )→ +

8810-6104


17. Apieceof zincwasadded toaqueousnitric acidand thevolumeofhydrogengasproducedwasmeasuredeveryminute.Theresultsareplottedonthegraphbelow.

VolumeofH

2/cm

3

45

40

35

30

25

20

15

10

5

00 5 10 15 20 25

Time/min

Whichgraphwouldyouexpectifthesamemassofpowderedzincwasaddedtonitricacidwiththesameconcentration?

VolumeofH

2/cm

3

45

40

35

30

25

20

15

10

5

0

A

B

CD

0 5 10 15 20 25Time/min

8810-6104

–11–

Turn over


18. Whichchangesincreasetherateofthereactionbelow?

C H g Cl g C H Cl(l HCl (g4 10 2 4 9( ) ( ) ) )+ → +

I. Increaseofpressure

II. Increaseoftemperature

III. RemovalofHCl(g)

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

19. Whatistheequilibriumconstantexpressionforthereactionbelow?

2 2 2 4NO g N O g( ) ( )

A. KcNON O

= [ ][ ]

22

2 4

B. Kc2N O

NO= [ ]

[ ]4

2

C. Kc2N O

NO= [ ]

[ ]4

22

D. Kc2N O

NO= [ ]

[ ]4

22

8810-6104


20. The formation of nitric acid, HNO3(aq), from nitrogen dioxide, NO2(g), is exothermic and is areversiblereaction.

4 2 42 2 2 3NO g O g H O(l HNO aq( ) ( ) ) ( )+ +

Whatistheeffectofacatalystonthisreaction?

A. Itincreasestheyieldofnitricacid.

B. Itincreasestherateoftheforwardreactiononly.

C. Itincreasestheequilibriumconstant.

D. Ithasnoeffectontheequilibriumposition.

21. WhatistheconjugatebaseofH2CO3accordingtotheBrønsted-Lowrytheory?

A. CO32–

B. HCO3–

C. H3CO3+

D. CO2

22. AsolutionofacidAhasapHof1andasolutionofacidBhasapHof2.Whichstatementmust becorrect?

A. AcidAisstrongerthanacidB

B. [ ] [ ]A B>

C. TheconcentrationofH+ionsinAishigherthaninB

D. TheconcentrationofH+ionsinBistwicetheconcentrationofH+ionsinA

8810-6104

–13–

Turn over


23. Considerthefollowingreaction.

MnO aq H aq Fe aq Mn aq Fe aq H O (l)242 2 38 5 5 4− + + + ++ + → + +( ) ( ) ( ) ( ) ( )


A. MnO4–istheoxidizingagentanditloseselectrons.

B. MnO4–isthereducingagentanditloseselectrons.

C. MnO4–istheoxidizingagentanditgainselectrons.

D. MnO4–isthereducingagentanditgainselectrons.

24. MetalAismorereactivethanmetalB.Astandardvoltaiccellismadeasshown.

voltmeter

A

V

salt bridge

B

SolutioncontainingA2+(aq)

SolutioncontainingB2+(aq)


A. ElectronsflowintheexternalcircuitfromAtoB.

B. PositiveionsflowthroughthesaltbridgefromAtoB.

C. PositiveionsflowintheexternalcircuitfromBtoA.

D. ElectronsflowthroughthesaltbridgefromBtoA.

8810-6104


25. Whichstatementiscorrectfortheelectrolysisofmoltenleadiodide,PbI2?

A. Chemicalenergyisconvertedintoelectricalenergy.

B. Pb2+ionsareoxidizedatthenegativeelectrode(cathode).

C. I2isproducedatthepositiveelectrode(anode).

D. Ionsareproducedatbothelectrodes.

26. Whichofthefollowingsubstancesarestructuralisomersofeachother?

I. CH3(CH2)3CH3

II. (CH3)2CHCH3

III. CH3CH(CH3)CH2CH3

A. IandIIonly

B. IandIIIonly

C. IIandIIIonly

D. I,IIandIII

27. Which order is correct when the following substances are arranged in order of increasingboilingpoint?

A. CH3CH3<CH3CHO<CH3CH2OH

B. CH3CHO<CH3CH2OH<CH3CH3

C. CH3CH2OH<CH3CH3<CH3CHO

D. CH3CH3<CH3CH2OH<CH3CHO

8810-6104


28. Whichmonomercouldbeusedtoformapolymerwiththefollowingrepeatingunit?

C

H

H

C

H

Cl n

A. CH3CH2Cl

B. CH2ClCH2Cl

C. CH2CHCl

D. CHClCHCl

29. Whichreactionpathwaydescribeshowethanolcanbeformed?

A. ethene addition → chloroethane elimination → ethanol

B. ethane substitution → chloroethane nucleophilicsubstitution → ethanol

C. ethene substitution → ethanol

D. ethane addition → ethanol

30. Densitycanbecalculatedbydividingmassbyvolume.0 20 0 02. .± gofametalhasavolumeof0 050 0 005 3. .± cm .Howshoulditsdensityberecordedusingthisdata?

A. 4 0 0 025 3. .± −g cm

B. 4 0 0 8 3. .± −g cm

C. 4 00 0 025 3. .± −g cm

D. 4 00 0 8 3. .± −g cm

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Thursday 11 November 2010 (afternoon) INSTRUCTIONS TO ......PaPER 1 INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the