Question

Kr prove that Kcat Kuncat

Answer 1

Equilibrium constants aren't changed if you add (orchange) a catalyst. Since at equilibrium forward and backward rates are equal: ... Adding a catalyst will affect both the forward reaction and the reverse reaction in the same way and will not have an effect on the equilibrium constant. The catalyst will speed up both reactions thereby increasing the speed at which equilibrium is reached.he equilibrium constant never  depends on the type of catalyst used, no matter the nature of the reaction (homogeneous or heterogeneous). The equilibrium constant is a thermodynamic variable that is linked to the free Gibbs energy, and also varies with the temperature according to the Van't Hoff Equation. Catalysts only speed up the reaction rates; they don't have any effect on the equilibrium of the reactions.

However an adsorbent or a membrane may be able to selectively remove some of the reactor product and allow the reaction to continue to equilibrium on one side of the membrane and "beyond equilibrium" on the other side.