In a chemical reaction at constant temperature,the addition of a catalyst

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A catalyst works by providing an alternative reaction pathway with a lower activation energy. This allows more reactant molecules to have sufficient energy to undergo the reaction, thereby increasing the rate of the reaction. The equilibrium constant, concentration of the products at equilibrium, and energy released in the reaction are not directly affected by the presence of a catalyst. The fraction of molecules with more than a given kinetic energy may be increased by a catalyst, but this is not the primary mechanism by which it works.

In a Chemical Reaction at Constant Temperature,the Addition of a Catalyst