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6.2 Reversible reactions and dynamic equilibrium

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Question 44

Equal amounts of X were placed in three identical sealed containers. In each container, X reacted reversibly to form Y.

X ⇌ Y

Each mixture was allowed to reach equilibrium at a different temperature.

Temperature in °CPercentage yield of Y at equilibrium
6072
10058
14043

Use the results to explain whether the forward reaction is exothermic or endothermic and how decreasing the temperature from 100 °C to 80 °C would affect the amount of X at equilibrium.

[3]
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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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