GCE Chemistry CH2 1092-01
WJEC 2014 Online Exam Review GCE Chemistry CH2 1092-01 All Candidates' performance across questions
Question Title 1-6 7 8 9 10 11
N 3524 3522 3523 3524 3506 3504
Mean 6 7.6 8.5 8.8 5 5.1
SD 2.4 4 4.3 3.4 3.1 2.7
Max Mark 10 16 16 15 11 12
FF 60 47.8 53.4 58.7 45.6 42.4
Attempt % 100 99.9 100 100 99.5 99.4
GCE Chemistry CH2 1092-01 11
42.4
Question
10
45.6
9
58.7
8
53.4
7
47.8
1-6
60 0
10
20
30
40
50
60
Facility Factor %
70
80
90
100
5
9e 10a ii 11a i
3
5. Cyclohexane and hex-2-ene are isomers. Give a chemical test to distinguish between these two compounds. [2]
H
H
H
H
H
C
H
C
C
H
H
C
C
H
H
C H
H
C
H
H
H
C H H
H
H
C C
C
H
Reagent(s)
Observations
H
C
H
cyclohexane
H
H
hex-2-ene
..................................................................................................................................................................................................
.............................................................................................................................................................................................
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(1092-01)
Turn over.
10 92 010 0 03
Examiner only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
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(1092-01)
Turn over.
xaminer only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
Examiner only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
Examiner only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
Examiner only
14 10. (a) 1-bromobutane is a liquid that is insoluble in water. It can be converted to butan-1-ol in a one-step reaction.
H
H
H
H
H
C
C
C
C
H
H
H
H
Br
H
H
H
H
H
C
C
C
C
H
H
H
H
O
H
(i) Give the reagent(s) and condition(s) required for this reaction.
[2]
(ii) Explain why butan-1-ol is soluble in water whilst 1-bromobutane is not.
[3]
© WJEC CBAC Ltd.
(1092-01)
Examiner only
14 10.
(a) 1-bromobutane is a liquid that is insoluble in water. It can be converted to butan-1-ol in a one-step reaction.
H
H
H
H
H
C
C
C
C
H
H
H
H
Br
H
H
H
H
H
C
C
C
C
H
H
H
H
O
(ii) Explain why butan-1-ol is soluble in water whilst 1-bromobutane is not.
© WJEC CBAC Ltd.
(1092-01)
H
[3]
Examiner only
14 10.
(a) 1-bromobutane is a liquid that is insoluble in water. It can be converted to butan-1-ol in a one-step reaction.
H
H
H
H
H
C
C
C
C
H
H
H
H
Br
H
H
H
H
H
C
C
C
C
H
H
H
H
O
(ii) Explain why butan-1-ol is soluble in water whilst 1-bromobutane is not.
© WJEC CBAC Ltd.
(1092-01)
H
[3]
Examiner only
16 Examiner only
11. (a) Propene reacts with hydrogen bromide to give 2-bromopropane.
(i) Draw the mechanism for this reaction.
© WJEC CBAC Ltd.
(1092-01)
[3
16 Examiner only
11. (a) Propene reacts with hydrogen bromide to give 2-bromopropane.
(i) Draw the mechanism for this reaction.
(ii) Explain why the product of this reaction is mainly 2-bromopropane rather than 1-bromopropane. [2]
© WJEC CBAC Ltd.
(1092-01)
[3]
16 Examiner only
11. (a) Propene reacts with hydrogen bromide to give 2-bromopropane.
(i) Draw the mechanism for this reaction.
(ii) Explain why the product of this reaction is mainly 2-bromopropane rather than 1-bromopropane. [2]
© WJEC CBAC Ltd.
(1092-01)
[3]
Question Title 1-6 7 8 9 10 11
N 3524 3522 3523 3524 3506 3504
Mean 6 7.6 8.5 8.8 5 5.1
SD 2.4 4 4.3 3.4 3.1 2.7
Max Mark 10 16 16 15 11 12
FF 60 47.8 53.4 58.7 45.6 42.4
Attempt % 100 99.9 100 100 99.5 99.4
GCE Chemistry CH2 1092-01 11
42.4
Question
10
45.6
9
58.7
8
53.4
7
47.8
1-6
60 0
10
20
30
40
50
60
Facility Factor %
70
80
90
100
5
9e 10a ii 11a i
3
5. Cyclohexane and hex-2-ene are isomers. Give a chemical test to distinguish between these two compounds. [2]
H
H
H
H
H
C
H
C
C
H
H
C
C
H
H
C H
H
C
H
H
H
C H H
H
H
C C
C
H
Reagent(s)
Observations
H
C
H
cyclohexane
H
H
hex-2-ene
..................................................................................................................................................................................................
.............................................................................................................................................................................................
© WJEC CBAC Ltd.
(1092-01)
Turn over.
10 92 010 0 03
Examiner only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
© WJEC CBAC Ltd.
(1092-01)
Turn over.
xaminer only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
Examiner only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
Examiner only
13 (e) Carbon monoxide contains two covalent bonds and one co-ordinate bond. Explain what is meant by the terms covalent bond and co-ordinate bond, indicating the difference between them. [2]
Examiner only
14 10. (a) 1-bromobutane is a liquid that is insoluble in water. It can be converted to butan-1-ol in a one-step reaction.
H
H
H
H
H
C
C
C
C
H
H
H
H
Br
H
H
H
H
H
C
C
C
C
H
H
H
H
O
H
(i) Give the reagent(s) and condition(s) required for this reaction.
[2]
(ii) Explain why butan-1-ol is soluble in water whilst 1-bromobutane is not.
[3]
© WJEC CBAC Ltd.
(1092-01)
Examiner only
14 10.
(a) 1-bromobutane is a liquid that is insoluble in water. It can be converted to butan-1-ol in a one-step reaction.
H
H
H
H
H
C
C
C
C
H
H
H
H
Br
H
H
H
H
H
C
C
C
C
H
H
H
H
O
(ii) Explain why butan-1-ol is soluble in water whilst 1-bromobutane is not.
© WJEC CBAC Ltd.
(1092-01)
H
[3]
Examiner only
14 10.
(a) 1-bromobutane is a liquid that is insoluble in water. It can be converted to butan-1-ol in a one-step reaction.
H
H
H
H
H
C
C
C
C
H
H
H
H
Br
H
H
H
H
H
C
C
C
C
H
H
H
H
O
(ii) Explain why butan-1-ol is soluble in water whilst 1-bromobutane is not.
© WJEC CBAC Ltd.
(1092-01)
H
[3]
Examiner only
16 Examiner only
11. (a) Propene reacts with hydrogen bromide to give 2-bromopropane.
(i) Draw the mechanism for this reaction.
© WJEC CBAC Ltd.
(1092-01)
[3
16 Examiner only
11. (a) Propene reacts with hydrogen bromide to give 2-bromopropane.
(i) Draw the mechanism for this reaction.
(ii) Explain why the product of this reaction is mainly 2-bromopropane rather than 1-bromopropane. [2]
© WJEC CBAC Ltd.
(1092-01)
[3]
16 Examiner only
11. (a) Propene reacts with hydrogen bromide to give 2-bromopropane.
(i) Draw the mechanism for this reaction.
(ii) Explain why the product of this reaction is mainly 2-bromopropane rather than 1-bromopropane. [2]
© WJEC CBAC Ltd.
(1092-01)
[3]
