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6.2 Reversible reactions and dynamic equilibrium

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Question 46

A student considers these two equilibria in separate closed containers at constant temperature.

Reaction 1:

3O2(g)⇌2O3(g)3\text{O}_2\text{(g)} \rightleftharpoons 2\text{O}_3\text{(g)}3O2​(g)⇌2O3​(g)

Reaction 2:

H2(g)+I2(g)⇌2HI(g)\text{H}_2\text{(g)} + \text{I}_2\text{(g)} \rightleftharpoons 2\text{HI(g)}H2​(g)+I2​(g)⇌2HI(g)

The student claims:

“Increasing the pressure increases the equilibrium yield of the products in every reaction involving gases.”

Evaluate the student's claim using both reactions.

[4]
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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