Question

Write chemical equations, to obtain nitric acid from ammonia gas by Ostwald's process.Write answers of the given question.

Answer 1

The chemical reactions for the production of the Nitric acid are ⇒

1. 4NH₃ + 5O₂ -----450 °C & Pt. --------> 4NO + 6H₂O

This is the catalytic oxidation of the Ammonia and also the basic reaction of the Ostwald process.

2. The NO obtained is reacted with the air at the temperature of 50° C to produce the Nitric oxide.

∴ 2NO + O₂ ----------→ 2NO₂

3. This oxide obtained is reacted with the air and water to produce the nitric acid as such,

4NO₂ + O₂ + 2H₂O -----------→ 4HNO₃

This nitric acid obtained is not 100% pure. It is somewhat around 68% pure.

Hope it helps.