Question

Which one of the following is a homogeneous catalysis?

• A. Hydrogenation of oils.
• B. Synthesis of ammonia by Haber's process.
• C. Manufacture of sulphuric acid by lead chamber process
• D. Manufacture of sulphuric acid by Contact process.

Answer 1

Answer: (C)

Manufacture of sulphuric acid by lead chamber process

Answer 2

In lead chamber process, $SO_2$ is oxidised to $SO_3$ by the oxides of nitrogen. Hence it is homogeneous catalysis as the catalyst as well as the reactants are in gaseous.state.