Catalysts increase the rate of a reaction by

Decreasing the activation energy of the reaction.

Explanation:

Catalyst may be defined as the substance that increase the rate of a bio chemical reaction. The catalyst does not change the equilibrium of the reaction.

The catalyst increase the rate of a chemical reaction by decreasing the activation energy of the reaction. The activation energy is the minimum amount of energy required for the conversion of reactant into product. The catalyst increases the effective collision between the molecules and decreases the activation energy. Hence, increases the rate of a reaction.

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