Question

Nitric acid is manufactured by Ostwald's process. 

Give a source of ammonia gas used in the manufacture (Process).

Answer 1

Ostwald process to manufacture nitric acid-

Catalytic oxidation of Ammonia

A mixture of dry air and dry ammonia in the ratio of 10:1 by volume is compressed and then passed into a platinum gauze which acts as catalyst at about 800℃.

4NH₃​ + 5O_2​⟶4NO+6H₂​O + Heat

Answer 2

Ammonia gas can be manufactured, on large scale, by Haber's process. Which can be used as a source of NH₃ in manufacture of Nitric oxide.

N₂(g) + 3H₂(g) \(\rightleftharpoons\) 2NH₃(g)