Reversibility and dynamic equilibria

1 mark · Easy

State one characteristic of a system at dynamic equilibrium.

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The rate of the forward and reverse reactions are equal (so concentrations of reactants and products remain constant).

Also accept: The concentrations of reactants and products stay constant.; Forward and backward reactions occur at the same rate.

Common mistakes: Reactants and products stop reacting.; Only the forward reaction happens.

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Marking points

B1 · 1 mark · States any correct characteristic of dynamic equilibrium (e.g., rates equal, concentrations constant).

Worked solution

At dynamic equilibrium, the rate of the forward and backward reactions are equal.