plumiEquilibrium experiments and industrial conditions: OCR A‑Level Chemistry A questions
OCR A-Level Chemistry A past-paper questions on 3.2.3.2 Equilibrium experiments and industrial conditions, 2016–2025, with mark schemes and examiner’s reports where available.
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Q24(c)(ii)
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All 5 questions on Equilibrium experiments and industrial conditions, as a list
- June 2023, AS Paper 1, Q24(c)(ii) (1 mark): In the industrial production of SO3, an excess of O2(g) is used rather than a 2:1 proportion of SO2(g) to O2(g) which would match the stochiometry in Equilibriu
- June 2022, Paper 1, Q20(a) (6 marks): This question is about equilibria involving hydrogen. (a)* Hydrogen is used industrially to manufacture ammonia. The equilibrium is shown below. 2NH3(g) ∆H = –9
- June 2022, AS Paper 2, Q4(a)(i) (6 marks): In industry, hydrogen is manufactured from methane, as shown in Equilibrium 4.1. CO(g) + 3H2(g) ΔH = +206 kJ mol–1 CH4(g) + H2O(g) Equilibrium 4.1 The industria
- June 2018, AS Paper 2, Q4(c) (5 marks): Predict the conditions of temperature and pressure for a maximum equilibrium yield of nitrogen monoxide in equilibrium 4.1. • Explain your prediction in terms o
- June 2016, AS Paper 1, Q25(a) (5 marks): Le Chatelier’s principle can be used to predict how different conditions affect the equilibrium position. • Using le Chatelier’s principle, show that a low temp
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