A chemical reaction is catalysed by a catalyst X. Hence, X

Question

A chemical reaction is catalysed by a catalyst X. Hence, X (A) reduces enthalpy of the reaction (B) decreases rate constant of the reaction (C) increases activation energy of the reaction (D) does not affect equilibrium constant of the reaction

Tardigrade Admin · Accepted Answer

Although a catalyst speeds up the reaction but it does not shift the position of equilibrium. This is due to the fact that the presence of catalyst reduces the height of barrier by providing an alternative path for the reaction and lowers the activation energy. However, the lowering in activation energy is to the same extent for the forward as well as the backward reaction.

Q. A chemical reaction is catalysed by a catalyst X. Hence, X

reduces enthalpy of the reaction

decreases rate constant of the reaction

increases activation energy of the reaction

does not affect equilibrium constant of the reaction