Question

$N{H}_{4}Cl+NaN{O}_2$ when heated gives nitrogen gas.

• A. True
• B. False

Answer 1

The correct option is A

True

Ammonium chloride and sodium nitrite when heated together form ammonium nitrite and sodium chloride.

$N{H}_{4}Cl+NaN{O}_2⟶N{H}_{4}N{O}_2+NaCl$

Ammonium nitrite formed this way is not stable, so it immediately decomposes to give $N_2$ and water.

$N{H}_{4}N{O}_2⟶N_2+H_{2}O$

This is the laboratory method to prepare $N_2$.