Which of the following is not true about a catalyst

Options

A. mechanism of the reaction in presence and absence of catalyst could be diffent
B. enthalpy of th reaction change with catalysis
C. catalyst enhances both forward and backwards reaction at equal rate
D. catlyst participates in the reaction but not consumed in the process

Answer

C

Explanation

The catalyst
(i) If not present may give a different product.
(ii) Will not change the net enthalpy of the reaction.
(iii)Can enhances both forwards and backward reactions.
(iv) Will participates in the reaction but not get consumed.
(v) Use of a catalyst may change the order.