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6.2 Reversible reactions and dynamic equilibrium

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Question 10

Sulfur dioxide and oxygen are allowed to reach equilibrium in a sealed container.

2SO2(g)+O2(g)⇌2SO3(g)2\text{SO}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{SO}_3\text{(g)}2SO2​(g)+O2​(g)⇌2SO3​(g)

The mixture is cooled. When a new equilibrium is reached, the amount of sulfur trioxide has increased.

What does this show?

[1]
A

The reverse reaction transfers energy to the surroundings.

B

The forward reaction is faster than the reverse at the new equilibrium.

C

The forward reaction gives out more energy than the reverse takes in.

D

The reverse reaction takes in energy from the surroundings.

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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