Question

A chemical reaction is catalyzed 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

Answer 1

(d) does not affect equilibrium constant of reaction.

the right answer can be :

1. It reduces activation energy

or

2. increases rate constant of reaction