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OCR A Level Chemistry A H432/02 JUNE 2025 MARK SCHEME: Synthesis and analytical techniques

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A Level CHEMISTRY Paper 1
Course
A level CHEMISTRY Paper 1

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Chemistry A Level



AQA
Please write clearly in block capitals.

Centre Candidate
number number


Surname

Forename(s)

Candidate re
signatu

A level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry


Time allowed: 2 hours
Materials For Examiner’s Use
For this paper you must have:
 the Periodic Table/Data Booklet, provided as an insert (enclosed) Questio Mark
 a ruler with millimetre measurements n
 a scientific calculator, which you are expected to use where appropriate. 1
2
Instructions 3
 Use black ink or black ball-point pen. 4
 Fill in the boxes at the top of this page.
 Answer all questions. 5
 You must answer the questions in the spaces provided. Do not 6
write outside the box around each page or on blank pages. 7
 If you need extra space for your answer(s), use the lined pages at the end of
8
this book. Write the question number against your answer(s).
 All working must be shown. TOTAL
 Do all rough work in this book. Cross through any work
you do not want to be marked.

Information
 The marks for questions are shown in brackets.
 The maximum mark for this paper is 105.




*JUN227405101
* IB/M/Jun22/
E11
7405/1

, 2
Do not write
outside the
There are no questions printed on this page box




DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED




*02
IB/M/
* Jun22/7405/1

, 3
Do not write
outside the
Answer all questions in the spaces box
provided.


0 1 This question is about equilibria.

0 1
.1 Give two features of a reaction in dynamic equilibrium.
[2 marks]

Feature 1



Feature 2




0 1 .2 A gas-phase reaction is at equilibrium.
When the pressure is increased the yield of product decreases.

State what can be deduced about the chemical equation for this equilibrium.
[1 mark]




Question 1 continues on the next page




*03
IB/M/
* Jun22/7405/1

, 4

Turn over ► Do not write
outside the




*03
IB/M/
* Jun22/7405/1

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Institution
A level CHEMISTRY Paper 1
Course
A level CHEMISTRY Paper 1

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Uploaded on
May 23, 2023
File latest updated on
November 7, 2025
Number of pages
39
Written in
2022/2023
Type
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