Question

# Industrial preparation of nitric acid by Ostwald’s process involves:A.Oxidation of $N{H_3}$ B.Reduction of $N{H_3}$C.Hydrogenation of $N{H_3}$D.Hydrolysis of $N{H_3}$

Hint: Nitric acid is a chemical compound made up from the combination of nitrogen, hydrogen and oxygen elements in a specific ratio. It is highly corrosive mineral acid. Nitric acid is also known as aqua fortis and spirit of niter.

$4N{H_3} + {O_2} \to 4NO + 6{H_2}O$
$2NO + {O_2} \to 2N{O_2}$
$3N{O_2} + {H_2}O \to 2HN{O_3} + NO$
Note: The easiest method of preparation of nitric acid in the lab is by dissolving additional nitrogen dioxide in $68\%$ nitric acid in an absorption tower. Dissolved nitrogen oxides are either stripped in the case of white fuming nitric acid, or remain in the solution to form red fuming nitric acid.