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    Combined Science GCSE

    Effect of pressure and concentration on equilibrium

    What Effect of pressure and concentration on equilibrium means in Combined Science GCSE, as defined for AQA.

    Definitions of Effect of pressure and concentration on equilibrium

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    Reference: AQA

    If pressure increases, the side with fewer gas molecules is favoured; increasing a reactant favours the forward reaction and increasing a product favours the reverse reaction.
    AQA · The effect of changing conditions on equilibrium (HT only) (study guide)
    For gases, increasing pressure favours the side with fewer molecules, and changing the concentration of a reactant or product shifts the equilibrium to counteract the change.
    AQA · The effect of changing conditions on equilibrium (HT only) (study guide)

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