Question

Why contact process of prepar
ing sulphuric acid is better than lead chamber process

Answer 1

Answer:

The contact process is used to produce sulfuric acid in the

high concentrations required for industrial processes. Earlier platinum was

used as a catalyst for this reaction but it is susceptible to react with

arsenic impurities in the sulfur feedstock. So now vanadium oxide V2O5 is

preferred.

The contact process is preferred to the previous lead

chamber process because:

1. It is much more economical.

2. The contact process also produces sulfur trioxide and

oleum.