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