Which of the following statement is not correct for the catalyst ?

Options

A. It catalyses the forward and baackward reactions to the same extent
B. It alters `DeltaG ` of the reaction
C. It is a substance that does not charge the equilibrium constant of a reaction
D. It provides an alternate mechanism by reducing activation energy between reactants and products.

Answer

B

Explanation

Characteristics of catalyst
(a) It catalyses the forward and backward reaction to the same extent as it decrease energy of activation hence, increases the rate of both the reactions.
(b) Since, react ion quotiert is the relation between concentration of reactants and products. Hence, cata yst does not alter Gibbs free ene gy as it is related to reaction quotient. Thus, Gibbs free energy does not change curing the reaction when catalyst is added to it.
`" "DeltaG = - RT` IN Q
Where, Q = reactions quotient
(c) It doesn,t alter equilibrium of reaction as equilibrium constant is also concentration dependent term.
(d) It provides an alternate mechanism by reducing activation energy between reactants and products.