A Level Chemistry 9701, topic 23.3

Entropy change, ΔS: past paper questions

5 Cambridge A Level Chemistry 9701 questions on Entropy change, ΔS (23.3) from 5 papers, 2023 to 2025. Open the paper or try a question free.

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Questions: 5
Papers: 5
Years: 2023 to 2025
Total marks: 61
Average per question: 12.2 marks
Largest question: 17 marks

By type: Structured 5

How hard the questions are

Recall0
Apply1
Analyse4
Not banded0

Derived from the command word Cambridge prints in each question, banded by a fixed table beside the syllabus's own definitions. A question printing no command word is unbanded: unknown, not middling.

Command words

calculateApply4 questions
work out from given facts, figures or information
defineRecall4 questions
give precise meaning
useApply4 questions
completeApply3 questions
explainAnalyse3 questions
set out purposes or reasons / make the relationships between things evident / provide why and/or how and support with relevant evidence
predictAnalyse3 questions
suggest what may happen based on available information
identifyRecall2 questions
name/select/recognise
writeRecall2 questions

Where the questions come from

By year

20251
20242
20232

By session

May/June2
Oct/Nov3

By paper

Paper 45

Questions on this topic

Showing 5 of 5, spread across the years. Open one to write your answer and have it marked.

Question 3May/June 2025, paper 42Structured8 marksHas a diagram
Define entropy.
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Question 2Oct/Nov 2024, paper 41Structured14 marksHas a diagram
Predict and explain the variation in enthalpy change of hydration for the ions $F^{-}$ , ${C l}^{-}$ , ${B r}^{-}$ and $I^{-}$ .
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Question 3Oct/Nov 2023, paper 41Structured17 marksHas a diagram
Hydrogen peroxide is a liquid at $298 K$ . It is moderately stable under room conditions but will decompose quickly if a catalyst is added. $reaction 1 2 H_{2} O_{2} (l) \to 2 H_{2} O (l) + O_{2} (g)$ Define entropy.
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Question 3May/June 2024, paper 42Structured5 marks
Carbon disulfide, ${CS}_{2}$ , is flammable and reacts readily with oxygen, as shown in reaction 1.
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Question 3Oct/Nov 2023, paper 43Structured17 marksHas a diagram
Hydrogen peroxide is a liquid at $298 K$ . It is moderately stable under room conditions but will decompose quickly if a catalyst is added. $reaction 1 2 H_{2} O_{2} (l) \to 2 H_{2} O (l) + O_{2} (g)$ Define entropy.
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