plumiReversible reactions and equilibrium: CAIE IGCSE Chemistry questions
Every CAIE IGCSE Chemistry exam question on 6.3 Reversible reactions and equilibrium, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Calculations
Q1(a)
The whole paper ↗![June 2024 Paper 4, question 1(a): convert sulfur dioxide into sulfur trioxide in the manufacture of sulfuric acid [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062041-jun24-01-a-qp.webp)
Q4(a)
The whole paper ↗![June 2024 Paper 4, question 4(a): State what is meant by the term equilibrium. [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062041-jun24-04-a-qp.webp)
Q4(b)(i)
The whole paper ↗![June 2024 Paper 4, question 4(b)(i): Explain why the position of equilibrium does not change. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062041-jun24-04-bi-qp.webp)
Q4(b)(ii)
The whole paper ↗![June 2024 Paper 4, question 4(b)(ii): Suggest why the colour of the mixture of gases turns darker purple. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062041-jun24-04-bii-qp.webp)
Q4(c)
The whole paper ↗
Q4(e)(ii)
The whole paper ↗![June 2024 Paper 4, question 4(e)(ii): State the effect on the position of equilibrium when a catalyst is used. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062041-jun24-04-eii-qp.webp)
Q3(b)(i)
The whole paper ↗![Specimen Paper 3, question 3(b)(i): State the meaning of the symbol ⇌. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-03-bi-qp.webp)
Q3(b)(ii)
The whole paper ↗![Specimen Paper 3, question 3(b)(ii): State the colour change when water is added to anhydrous cobalt(II) chloride. from .. to [2]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/062003-spec-03-bii-qp.webp)
All 13 questions on Reversible reactions and equilibrium, as a list
- June 2024, Paper 1, Q16 (1 mark): Water is added to anhydrous copper(II) sulfate. Which row describes the direction of energy change and the colour change of the mixture during the reaction? dir
- June 2024, Paper 2, Q20 (1 mark): Hydrogen is made by reacting carbon with steam. The equation for the reaction is shown. C(s) + H2O(g) ⇌ H2(g) + CO(g) The forward reaction is endothermic. Which
- June 2024, Paper 2, Q21 (1 mark): Which row shows the conditions used for the conversion of sulfur dioxide to sulfur trioxide in the 21 Contact process? pressure/atm temperature/ °C catalyst A 2
- June 2024, Paper 4, Q1(a) (1 mark): convert sulfur dioxide into sulfur trioxide in the manufacture of sulfuric acid [1]
- June 2024, Paper 4, Q4(a) (2 marks): State what is meant by the term equilibrium. [2]
- June 2024, Paper 4, Q4(b)(i) (1 mark): Explain why the position of equilibrium does not change. [1]
- June 2024, Paper 4, Q4(b)(ii) (1 mark): Suggest why the colour of the mixture of gases turns darker purple. [1]
- June 2024, Paper 4, Q4(c) (1 mark): The temperature of the mixture of gases is decreased. All other conditions stay the same. The mixture of gases turns lighter purple. State what can be deduce
- June 2024, Paper 4, Q4(e)(ii) (1 mark): State the effect on the position of equilibrium when a catalyst is used. [1]
- Specimen, Paper 1, Q14 (1 mark): Which row correctly matches the experiment and observations to the identity of the underlined substance? experiment and observations identity of the underlined
- Specimen, Paper 2, Q16 (1 mark): Methanol is prepared by the reversible reaction shown. CO(g) + 2H2(g) ⇌ CH3OH(g) The forward reaction is exothermic. Which conditions produce the highest equili
- Specimen, Paper 3, Q3(b)(i) (1 mark): State the meaning of the symbol ⇌. [1]
- Specimen, Paper 3, Q3(b)(ii) (2 marks): State the colour change when water is added to anhydrous cobalt(II) chloride. from .. to [2]
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