Which law states that the rate of a chemical reaction is proportional to the product of the active masses of the reacting substances, raised to the power, equal to the respective number of their molecules taking part in a reaction by the balanced chemical equation?

Law of mass action

Law of mass action states that the rate of a chemical reaction is proportional to the product of the active masses of the reacting substances, raised to the power, equal to the respective number of their molecules taking part in a reaction by the balanced chemical equation.

Active mass = molar concentration of substance 

                  = \(\frac{\text{no of gram-moles of substance}}{\text{volume in litres}}\)