A catalyst is a substance that increases the rate of the reaction without getting changed. A catalyst lowers the activation rate of the reaction and modifies the reaction rate.
Catalyst is the substance that lower or increases the activation rate of the reactant to increase the reaction rate and the product formation. The catalyst in the reaction does not get changed by itself but alters the rate of the reactant that participates in the reaction.
Therefore, the activation energy and the rate of the reaction are the two ways by which the catalysts affect the reaction.
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