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6.2 Reversible reactions and dynamic equilibrium

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Question 17

Carbon and carbon dioxide react reversibly in a closed vessel.

C(s)+CO2(g)⇌2CO(g)\text{C(s)} + \text{CO}_2\text{(g)} \rightleftharpoons 2\text{CO(g)}C(s)+CO2​(g)⇌2CO(g)

The reaction has reached equilibrium. The temperature is kept constant while the pressure is decreased.

Which statement describes the amounts at the new equilibrium?

[1]
A

Carbon monoxide decreases and carbon dioxide increases

B

The amounts of carbon monoxide and carbon dioxide both increase

C

The amounts of carbon monoxide and carbon dioxide stay the same

D

Carbon monoxide increases and carbon dioxide decreases

Markscheme

6.2 Reversible reactions and dynamic equilibrium Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Reversible reactions and dynamic equilibrium

109 exam-style questions on AQA GCSE Chemistry 6.2 Reversible reactions and dynamic equilibrium, covering 6.2.1 Reversible reactions, 6.2.2 Energy changes and reversible reactions, 6.2.3 Equilibrium, 6.2.4 The effect of changing conditions on equilibrium, 6.2.5 The effect of changing concentration, 6.2.6 The effect of temperature changes on equilibrium, and 6.2.7 The effect of pressure changes on equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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