Q.

Industrial preparation of nitric acid by Ostwald's process involves:

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a

hydrolysis of NH3

b

oxidation of NH3

c

reduction of NH3

d

hydrogenation of NH3

answer is A.

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Detailed Solution

Ammonia is oxidise  to nitrogen oxides and on hydrolysis to give nitric acid.

The preparation of nitric acid by Ostwald's process involves the following reactions:
4NH3​(g)+5O2​ (g)⟶catalyst​4NO(g)+6H2​O(g)

2NO(g)+O2​(g)⇋2NO2​(g)
3NO2​+H2​O(g)→2HNO3​+NO(g)
The first step involves the oxidation of NH3​ to NO.

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Industrial preparation of nitric acid by Ostwald's process involves: