Law of Mass Action

Type: Concept

As of November 2026, Law of Mass Action has been mentioned in one podcast episode on Oxford Mathematics (Jan 2026). Fundamental principle used to derive the differential equations describing enzyme reactions.

In chemistry, the law of mass action is the proposition that the rate of a chemical reaction is directly proportional to the product of the activities or concentrations of the reactants. It explains and predicts behaviors of solutions in dynamic equilibrium. Specifically, it implies that for a chemical reaction mixture that is in equilibrium, the ratio between the concentration of reactants and products is constant.