Question

Give reasons for the following.

Mixture of ammonium chloride and sodium chloride can be separated by sublimation.

Answer 1

Sublimation
Principle: This process is used to separate a mixture in which one constituent sublimes.

• Sublimation is the process in which a solid directly changes to a gas without passing through the liquid state.
• A substance is said to be sublime if it passes from the solid state directly into the gaseous state without changing into a liquid.
• Substances such as ammonium chloride, camphor, and naphthalene undergo sublimation.
• sodium chloride does not exhibit the property of sublimation.
• Hence, a Mixture of ammonium chloride and sodium chloride can be separated by sublimation.