Question

A gas ' Y ' of pungent smell is obtained when a substance ' X ' is heated with slaked lime. Name both the substances ' X ' and ' Y '. Also give the balanced equation.

Answer 1

• When we heat ammonium chloride $\left({\mathrm{NH}}_4\mathrm{Cl}\right)$ with slaked lime $\left(\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\right)$, we get Calcium chloride $\left({\mathrm{CaCl}}_2\right)$ with water and ammonia $\left({\mathrm{NH}}_3\right)$, which has a pungent smell.
• Balanced reaction of the reaction will be:
  $2{\mathrm{NH}}_4\mathrm{Cl}\left(aq\right)+\mathrm{Ca}\left(\mathrm{OH}{)}_2\right(s\left)\stackrel{\text{Heat}}{⟶}\mathrm{CaCl}{}_2(aq\right)+2{\mathrm{H}}_2\mathrm{O}\left(l\right)+2{\mathrm{NH}}_3\left(\mathrm{aq}\right)\uparrow$
• Therefore, X is ammonium chloride and Y is ammonia.