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5.3 Equilibria

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Question 28
H

Which reaction gives a greater yield of product at equilibrium when both the temperature and the pressure are decreased?

[1]
A

2X(g)⇌Y(g)\mathrm{2X(g) \rightleftharpoons Y(g)}2X(g)⇌Y(g), forward reaction exothermic

B

X(g)⇌2Y(g)\mathrm{X(g) \rightleftharpoons 2Y(g)}X(g)⇌2Y(g), forward reaction endothermic

C

X(g)⇌2Y(g)\mathrm{X(g) \rightleftharpoons 2Y(g)}X(g)⇌2Y(g), forward reaction exothermic

D

2X(g)⇌Y(g)\mathrm{2X(g) \rightleftharpoons Y(g)}2X(g)⇌Y(g), forward reaction endothermic

Markscheme

5.3 Equilibria Questions

  1. GCSE
  2. /Chemistry
  3. /5.3 Equilibria

124 exam-style questions on OCR GCSE Chemistry 5.3 Equilibria, covering 5.3.1 Reversible reactions and dynamic equilibrium and 5.3.2 Changing the position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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