Question

How HNO3 can be prepared by laboratory​

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.

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Answer 2

Laboratory preparation

Nitric acid is prepared in the laboratory by heating a nitrate salt with concentrated sulphuric acid.

$NaNO3 + H2SO4 \longrightarrow NaHSO4 + HNO3$

Vapours of nitric acid are condensed to a brown liquid in a receiver cooled under cold water. Dissolved oxides of nitrogen are removed by redistillation or blowing a current of carbondioxide or dry air through the warm acid.

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