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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
N10/4/CHEMI/SPM/ENG/TZ0/XX
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– N10/4/CHEMI/SPM/ENG/TZ0/XX
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
N10/4/CHEMI/SPM/ENG/TZ0/XX
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
–6– N10/4/CHEMI/SPM/ENG/TZ0/XX
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
N10/4/CHEMI/SPM/ENG/TZ0/XX
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
–8– N10/4/CHEMI/SPM/ENG/TZ0/XX
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
N10/4/CHEMI/SPM/ENG/TZ0/XX
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
–10– N10/4/CHEMI/SPM/ENG/TZ0/XX
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
N10/4/CHEMI/SPM/ENG/TZ0/XX
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
–12– N10/4/CHEMI/SPM/ENG/TZ0/XX
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
N10/4/CHEMI/SPM/ENG/TZ0/XX
23. Considerthefollowingreaction.
MnO aq H aq Fe aq Mn aq Fe aq H O (l)242 2 38 5 5 4− + + + ++ + → + +( ) ( ) ( ) ( ) ( )
Whichstatementiscorrect?
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)
Whichstatementiscorrect?
A. ElectronsflowintheexternalcircuitfromAtoB.
B. PositiveionsflowthroughthesaltbridgefromAtoB.
C. PositiveionsflowintheexternalcircuitfromBtoA.
D. ElectronsflowthroughthesaltbridgefromBtoA.
8810-6104
–14– N10/4/CHEMI/SPM/ENG/TZ0/XX
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
–15– N10/4/CHEMI/SPM/ENG/TZ0/XX
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