Question

explain the laboratory method of preparation of nitrogen gas under the following points: •method
•chemical equations
•labelled diagram.​

Answer 1

Answer:

Nitrogen is prepared in the laboratory by heating on equimolar aqueous solution of ammonium chloride and sodium nitrite. The ammonium nitrite formed as a result of double decomposition reaction, decomposes to form dinitrogen.

NH

4

Cl(aq)+NaNO

2

(aq)→NH

4

NO

2

(aq)+NaCl(aq)

Ammonium nitrate

NH

4

NO

2

(aq)

△

Nitrogen

N

2

(g)

+2H

2

O(l).