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5.2 Reversible reactions and equilibria

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Question 5
F

The two diagrams show possible energy profiles. Consider the left-hand profile for the forward direction of a reversible reaction.

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a.

Use the relative levels on the left-hand profile to explain the energy change in the forward direction and in the reverse direction.

[3]
b.

The reaction takes place in a sealed container at constant temperature. Eventually the amounts of reactants and products stay constant. Explain why this does not show that the reaction has stopped.

[3]
c.

A gaseous product is continuously allowed to escape from another container. Explain why the same closed-system equilibrium description cannot be applied to that container.

[2]
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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