Question

On heating, a mixture of ${\mathrm{NH}}_4\mathrm{Cl}$ and ${\mathrm{KNO}}_2$ we get:

• A. ${\mathrm{NH}}_4{\mathrm{NO}}_3$
• B. ${\mathrm{KNH}}_4{\left({\mathrm{NO}}_3\right)}_2$
• C. ${\mathrm{N}}_2$
• D. $\mathrm{NO}$

Answer 1

The correct option is C

${\mathrm{N}}_2$

Explanation for Correct answer:

Option (C) ${\mathrm{N}}_2$

• On heating, a mixture ${\mathrm{NH}}_4\mathrm{Cl}$ and ${\mathrm{KNO}}_2$ we get Nitrogen gas, Potassium chloride, and two moles of water.

$\underset{\mathrm{Ammonium}\mathrm{chloride}}{{\mathrm{NH}}_4\mathrm{Cl}\left(\mathrm{aq}\right)}+\underset{\mathrm{Potassium}\mathrm{nitrite}}{{\mathrm{KNO}}_2\left(\mathrm{aq}\right)}\to \underset{\mathrm{Nitrogen}}{{\mathrm{N}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Potassium}\mathrm{chloride}}{\mathrm{KCl}\left(\mathrm{l}\right)}+\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{aq}\right)}$

• Hence, correct option.