Question

Which of the following statements is/are true regarding the contact process?

(a) Conversion of sulfur dioxide to sulfur trioxide takes place

(b) Vanadium oxide is used as a catalyst

(c) It accounts for 70% of the world’s production

(d) Conversion of sulfur dioxide to sulfur trioxide takes place in the presence of vanadium catalyst and it accounts for 70% world’s production

I got this question by my college director while I was bunking the class.

This key question is from Mineral Acids in section Mineral Acids of Corrosion Engineering

Answer 1

The correct choice is (d) Conversion of sulfur dioxide to sulfur trioxide takes place in the presence of vanadium catalyst and it accounts for 70% world’s production

Easy explanation: Contact process:

Sulfur compounds such as copper sulfide are burned to get SO2

Catalytic conversion of sulfur dioxide to sulfur trioxide takes place

Absorption of SO3 into water produces sulfuric acid.