Question

Suggest separation technique(s) one would need to employ to separate the given mixture - Potassium chloride and Ammonium chloride

Answer 1

Sublimation :

• It is a process by which a solid transforms directly into gas or it is the passage or conversion that substances undergo when passing from one state to another, from a solid substance to gas.

Separation of Potassium chloride $\mathrm{KCl}$ and Ammonium chloride ${\mathrm{NH}}_4\mathrm{Cl}$:

• These two are separated by the sublimation method.
• Since Ammonium chloride being a sublimate, sublimes leave behind the Potassium chloride
• Potassium chloride being less sublimate in nature sublimates at a lesser rate.

Hence through sublimation, Potassium chloride and Ammonium chloride are separated.