Question

In preparation of sulphuric acid from sulphur dioxide in lead chamber process. What substance is used as a catalyst?

विकल्प

• Manganese dioxide

• Vanadium pentoxide

• Nitric oxide

• Raney nickel

Answer 1

Nitric oxide

Explanation:

In the preparation of sulphuric acid (H₂SO₄) by lead chamber process, mixture containing SO₂ air and NO is treated with steam (H₂O). In this reaction, NO acts as a catalyst.

$$2\mathrm{SO}{\phantom{A}}_2+\underset{(\mathrm{from}\mathrm{air})}{\mathrm{O}{\phantom{A}}_2}+2\mathrm{H}{\phantom{A}}_2\mathrm{O}+\underset{\mathrm{Catalyst}}{[\mathrm{NO}]}⟶2\mathrm{H}{\phantom{A}}_2\mathrm{SO}{\phantom{A}}_4+\underset{\mathrm{Catalyst}}{[\mathrm{NO}]}$$