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Page 1

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SECTION 1


Section 1.1
M 1 a 2.0 b 5.3 c 1.3 d 10.0 e 5.0 b The relative number of moles of iodine and oxygen.
f 50.2 c To change the relative number of moles into the ratio
v 2 a 144 b Neodymium
of moles of oxygen relative…

Page 2

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SECTION 2


Section 1.4
M 1 The particles in a gas are much further apart than in a 3 a H2(g) + Cl2(g) Æ 2HCl(g)
liquid or solid. In a gas, therefore, the volume of the b Volumes of hydrogen and chlorine are the same.
v particles is a very…

Page 3

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SECTION 2


Section 2.2
M 1 a 238
Æ 234
+ 4 c 14 4
He Æ 17
+ 1
94Pu 92U 2He 7N + 2 8O 1p
221 217
b 87Fr Æ 85At + 4
2He d 27
13Al
4
+ 2He Æ 30
15P
1
+ 0n
v…

Page 4

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SECTION 3


c 2+ X 2­ 5 a In a normal covalent bond, each atom supplies a single
M
X
Mg X O X electron to make up the pair of electrons involved in
XX
the bond. In a dative covalent bond one atom supplies
2+ XX ­ XX ­…

Page 5

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SECTION 3


Section 3.2
M 1 a Li(g) because it has an extra electron shell. 4 a Na+
b Li+(aq) because the ion is surrounded by water b Na+Cl­
v molecules.
c Cl­(g) because it has an extra electron.
c Na+Cl­

d Cl­(aq) because the ion is surrounded by water…

Page 6

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SECTION 3


6 a XX ­

M
X X
H N H About 109°
XX

b XX +

v
X X
H N H About 120°



?
Section 3.4
v




1 a C6H14, C6H12, not isomers 4 Isomers of C8H10 (containing a benzene ring):
b C4H9Cl, C4H9Cl, isomers CH3 CH3…

Page 7

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SECTION 3


Section 3.5
M 1 F F 4 aF H
C C cis-1,2-difluoroethene C C
v H H F H
F H b No
? C C trans-1,2-difluoroethene
c There must be the same two atoms or groups of atoms
on each C atom attached to the double bond.…

Page 8

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SECTION 4


6 a H H H H b H3C
M H3C C C H3C C C CH CH3

H H H3C
C *C C CH3 C *C C CH3
v H C H C
H H
C H C H C
H
C


? H H H H H…

Page 9

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SECTION 4


c DH1 + DH3 = DH2 13 a CH3CHO(l) +2 O2(g) Æ 2CO2(g) + 2H2O(l)
M DH1 = DH2 ­ DH3
= 4(­393) kJ mol­1 + 5(­286) kJ mol­1
b
DH1
CH3CHO(l) + 2 O2(g) 2CO2(g) + 2H2O(l)
­ (­2877) kJ mol­1
v = ­125 kJ mol­1
DH2…

Page 10

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SECTION 4


Section 4.4
M 1 The entropies increase for the first four alkanes as the 3 Students' answers should be based on the following
molecules become heavier and composed of more atoms deductions.
v (the number of energy levels increases with the number
of atoms). Pentane is a liquid…

Comments

Adeel


is this for A level or GCSE?

Adeel


Do you have the exam without the answers aswell? I would like to do it

Tim Birkinshaw

There are at least two mistakes in this booklet; the answers for questions 6 & 7 in Section 10.3 are missing as are all the answers for Section 10.4 (2 questions).

The Sections labelled 10.4 and 10.5 should be 10.5 and 10.6 respectively.

Anyone got the correct answers for the missing questions or know where to find them?

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