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OCR
Oxford Cambridge and RSA
Tuesday 16 May 2023 – Morning
AS Level Chemistry A
H032/01 Breadth in chemistry
Time allowed: 1 hour 30 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 70.
• The marks for each question are shown in brackets [ ].
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2023 (RW/CT)
[601/5256/4] DC 315826/4
, Turn over
OCR is an exempt
Charity
, SECTION A
You should spend a maximum of 25 minutes on this
section.
Write your answer to each question in the box
provided.
1 Which statement explains the trend in boiling points down the halogens group?
A Covalent bonds become stronger.
B Induced dipole–dipole interactions (London forces) become stronger.
C Ionic bonds become stronger.
D Permanent dipole–dipole interactions become stronger.
Your answer [1]
2 A hydrocarbon contains 85.71% carbon by mass.
What is the empirical formula of the hydrocarbon?
A CH
B CH2
C CH4
D C 2H 4
Your answer [1]
3 Hydrogen can be prepared industrially by the reaction of methane
with steam. The equation is shown below.
CH4(g) + 2H2O(g) 4H2(g) + CO2(g)
What is the atom economy of hydrogen for this process?
A 3.8%
B 4.3%
C 15.4%
D 17.4%
, Your answer [1]
OCR
Oxford Cambridge and RSA
Tuesday 16 May 2023 – Morning
AS Level Chemistry A
H032/01 Breadth in chemistry
Time allowed: 1 hour 30 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 70.
• The marks for each question are shown in brackets [ ].
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2023 (RW/CT)
[601/5256/4] DC 315826/4
, Turn over
OCR is an exempt
Charity
, SECTION A
You should spend a maximum of 25 minutes on this
section.
Write your answer to each question in the box
provided.
1 Which statement explains the trend in boiling points down the halogens group?
A Covalent bonds become stronger.
B Induced dipole–dipole interactions (London forces) become stronger.
C Ionic bonds become stronger.
D Permanent dipole–dipole interactions become stronger.
Your answer [1]
2 A hydrocarbon contains 85.71% carbon by mass.
What is the empirical formula of the hydrocarbon?
A CH
B CH2
C CH4
D C 2H 4
Your answer [1]
3 Hydrogen can be prepared industrially by the reaction of methane
with steam. The equation is shown below.
CH4(g) + 2H2O(g) 4H2(g) + CO2(g)
What is the atom economy of hydrogen for this process?
A 3.8%
B 4.3%
C 15.4%
D 17.4%
, Your answer [1]
