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6.2 Reversible reactions and dynamic equilibrium

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Question 22

A substance R changes reversibly into substance S.

R⇌S\text{R} \rightleftharpoons \text{S}R⇌S

When 0.40 mol of R reacts in the forward direction, 32 kJ of energy is transferred to the surroundings. In the reverse reaction, 0.75 mol of S reacts to form R.

Calculate the energy transferred in the reverse reaction. State whether the energy is transferred to or from the surroundings.

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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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