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Identify that a reversible reaction in a closed system reaches equilibrium when: (a) the rate of the forward reaction matches the rate of the reverse reaction (b) the concentrations of reactants and products remain constant.

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Cambridge IGCSE ChemistryChemical reactionsSupplement content

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Identify that a reversible reaction in a closed system reaches equilibrium when: (a) the rate of the forward reaction matches the rate of the reverse reaction (b) the concentrations of reactants and products remain constant

  • This point belongs to Reversible reactions and equilibrium, especially Reversible reactions and equilibrium outcomes.
  • You need to be able to identify that a reversible reaction in a closed system reaches equilibrium when: (a) the rate of the forward reaction matches the rate of the reverse reaction (b) the concentrations of reactants and products remain constant.
  • The key ideas to know are State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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State

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This objective helps connect Reversible reactions and equilibrium outcomes to exam-style questions, flashcards, and revision notes for Reversible reactions and equilibrium.

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Paper 4 structured question: Reversible reactions and equilibrium

Paper 4Theory (Extended)1 marks

Description

Equilibrium in Reversible Reactions

In a closed system, a reversible reaction reaches equilibrium when the rate of the forward reaction equals the rate of the reverse reaction, and the concentrations of reactants and products remain constant.

  1. a

    State the condition that must be met for a reversible reaction to reach equilibrium.

    Aim for approximately 1 distinct marking point.

    [1]
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