Essential Chemistry for IGCSE - Chemical Reactions (Section 1 - No. 47)
Which of the following is NOT a characteristic of a system at chemical equilibrium?
The rate of the forward reaction equals the rate of the reverse reaction.
The concentrations of reactants and products are constant.
The reaction has stopped.
The macroscopic properties are constant.
Explanation
At equilibrium, the reactions don't stop, but occur at equal rates so the concentration of reactants and products is constant.
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