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#O C R A Level Chemistry A H432/02 Synthesis and analytical techniques June 2023
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#O C R A Level Chemistry A H432/02 Synthesis and analytical techniques June 2023
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#O C RA Level Chemistry A
H432/02 Synthesis and analytical techniques
June 2023
Time allowed: 2 hours 15 minutes
You must have:
the Data Sheet for Chemistry A
You can use:
a scientific or graphical calculator
an HB pencil
*
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 28 pages.
ADVICE
• Read each question carefully before you start your answer.
2023 Turn over
, 2
Section A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
1 Which compound is used for proton exchange in NMR spectroscopy?
A CCl4
B CDCl3
C D2O
D Si(CH3)4
Your answer
[1]
2 Which compound reacts with 2,4-dinitrophenylhydrazine but does not react with
Tollens’ reagent?
A C6H5COCOOH
B C6H5CH(OH)CHO
C CH3COCHO
D CH3CH2CH(OH)CH3
Your answer
[1]
3 Propyne, CH3C≡CH, is a member of the alkynes homologous series with the C≡C functional group.
What is the general formula of the alkynes?
A CnH2n–4
B CnH2n–2
C CnH2n
D CnH2n+2
Your answer
[1]
2023
, 3
4 The structure of the painkiller paracetamol is shown below.
OH
O
N
H
Paracetamol
Which functional groups are present in paracetamol?
A alcohol, amide
B alcohol, arene, ketone, amine
C phenol, amide
D phenol, ketone, amine
Your answer
[1]
5 Oxymetazoline, shown below, is used as a decongestant in the treatment of colds.
HO N
HN
Oxymetazoline
How many H atoms are in one molecule of oxymetazoline?
A 23
B 24
C 25
D 26
Your answer
[1]
2023 Turn over
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