Question

Identify the catalyst used in the lead chamber process.

(a) Finely divided molybdenum

(b) Platinised asbestos

(c) Nitric acid

(d) Potassium sulphate

The question was asked in an interview for job.

I'd like to ask this question from Application of Colloids topic in section Surface Chemistry of Engineering Chemistry II

Answer 1

The correct option is (c) Nitric acid

For explanation I would say: Lead chamber process is used in the manufacture of sulphuric acid. Nitric acid has the capacity to renew the acid from the acidified solution formed during the reaction. Thus it also promotes the rate of reaction by achieving the equilibrium state fast.