A chemical reaction has catalyst X. Hence X

Options

A. reduces enthalpy of the reaction
B. decreases rate constant of the reaction
C. increases activation energy of the reaction
D. does not effect equilibrium constant of the reaction

Answer

D

Explanation

A catalyst does not change the equilibrium constant of a revertible reaction because it catalyses the forward as well as the backward reaction to the same extent by lowering the `(E_(a))_(f)` and `(E_(a))_(b)` to the same but it is reached earlier, A catalyst does not change the `Delta_(r)H^(Ɵ)` because it can't alter the energies of reactants and products.