A catalyst increases thekineticenergyof reactant molecules which increases the magnitude of collision. These then decreasestheactivationenergy. A catalyst isnotconsumedbyreactionbecause it is neither reactant nor a product, hence hasnoeffectonequilibriumconstant.
it speed up a chemical reaction without being consumed by the reaction and increases the reaction rate by lowering the activation energy for a reaction but the average kinetic energy of the molecules remains the same well the required energy decreases
