Question

State any three precautions in the laboratory preparation of Nitric acid​

Answer 1

Answer:Nitric acid is prepared in the laboratory by heating a nitrate salt with concentrated sulphuric acid. ... Dissolved oxides of nitrogen are removed by redistillation or blowing a current of carbondioxide or dry air through the warm acid

Explanation:

Answer 2

Answer:

The principal method of manufacture of nitric acid is the catalytic oxidation of ammonia. In the method developed by the German chemist Wilhelm Ostwald in 1901, ammonia gas is successively oxidized to nitric oxide and nitrogen dioxide by air or oxygen in the presence of a platinum gauze catalyst.