Essential Chemistry for IGCSE - Chemical Reactions (Section 5 - No. 6)
What does it mean when a reaction is at equilibrium?
The forward and reverse reactions are occurring at equal rates.
The concentrations of reactants and products are constant.
The reaction has stopped.
The rate of the reverse reaction is zero.
Explanation
At equilibrium, the forward and reverse reactions proceed at the same rate, and the concentrations of reactants and products are constant.
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