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5.2 Reversible reactions and equilibria

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Question 15
H

For 2SO2(g)+O2(g)⇌2SO3(g)\mathrm{2SO_2(g)+O_2(g)\rightleftharpoons2SO_3(g)}2SO2​(g)+O2​(g)⇌2SO3​(g), decreasing pressure favours

[1]
A

SO3\mathrm{SO_3}SO3​, because the forward reaction is exothermic

B

SO3\mathrm{SO_3}SO3​, because there are fewer gas molecules on the right

C

SO2\mathrm{SO_2}SO2​ and O2\mathrm{O_2}O2​, because there are more gas molecules on the left

D

neither side, because pressure only changes the rate

Markscheme

5.2 Reversible reactions and equilibria Questions

  1. GCSE
  2. /Chemistry
  3. /5.2 Reversible reactions and equilibria

45 exam-style questions on Edexcel GCSE Chemistry 5.2 Reversible reactions and equilibria, covering 5.2.1 Reversible reactions and dynamic equilibrium, 5.2.2 The Haber process, and 5.2.3 Changing the position of a dynamic equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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