The concentrations of reactants and products do not change as equilibrium is approached, only the rate at which products are formed and reactants are consumed.

Question

Quizplus · Accepted Answer

At equilibrium, the concentrations of reactants and products remain constant because the rate of the forward reaction equals the rate of the reverse reaction, not because their concentrations do not change as equilibrium is approached. Before equilibrium is reached, concentrations of reactants and products do change.

The Concentrations of Reactants and Products Do Not Change as Equilibrium