A catalyst in a reversible reaction is to :

select correct statement (s) : the role of a catalyst in a reversible reaction is to allow the equilibrium to be achieved quickly , Diffusion process is involved in mechanism of heterogenous catalysis process , Hydrolysis of cane sugar is catalysed by H^(+) , promotors enhance the activity of a catalyst.

a) What is the role of catalyst in a reversible reaction? b) is it beneficial to add a catalyst in a system which has already attained equlibrium? Explain the answer. c) Which is the catalyst used in 'Haber process'?

What is the role of a catalyst in a reversible reaction?

A catalyst for reversible reaction is a substance that :