A reaction is approaching equilibrium when the rate of a forward reaction slows down and the rate of a reverse reaction speeds up.

Question

Quizplus · Accepted Answer

This is because as the concentrations of reactants decrease and products increase, the forward rate slows down while the reverse rate speeds up, until the point is reached where the rates of the forward and reverse reactions become equal and the system reaches equilibrium.

A Reaction Is Approaching Equilibrium When the Rate of a Forward