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#O C R AS Level Chemistry A H032/01 Breadth in chemistry May 2023
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#O C R AS Level Chemistry A H032/01 Breadth in chemistry May 2023
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#O C RAS Level Chemistry A
H032/01 Breadth in chemistry
May 2023
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.
2023 Turn over
, 2
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 C2H4
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]
2023
, 3
4 How many p-orbitals are occupied by electrons in a sulfur atom?
A 2
B 4
C 6
D 10
Your answer [1]
5 Which substance has the lowest oxidation number for sulfur?
A Na2SO4
B S8
C SF2
D SO2
Your answer [1]
6 Successive ionisation energies, in kJ mol–1, of an element in Period 3 of the periodic table are
shown below.
1st 2nd 3rd 4th 5th 6th 7th 8th 9th
578 1817 2745 11578 14831 18378 23296 27460 31862
What is the formula of the oxide of the Period 3 element?
A Na2O
B MgO
C Al 2O3
D SiO2
Your answer [1]
2023 Turn over
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