# Which one of the following is an example of homogeneous catalysis?

(a) Haber process of synthesis of ammonia.

(b) Catalytic conversion of $SO_2$ to $SO_3$ in contact process.

(c) Catalytic conversion of water gas to methanol.

(d) Acid hydrolysis of methyl acetate.

Answer: Acid hydrolysis of methyl acetate.

In the acid hydrolysis of methyl acetate, the reactants, products and the catalyst are all in the liquid phase, therefore it is an example of homogeneous catalysis