Question

Name the technique to separate camphor from salt.

Answer 1

Sublimation:

1. It is defined as the transition of a substance from a solid to a gaseous state without converting it to a liquid state.
2. This is an endothermic phase transition that takes place at a temperature and pressure below the substance's triple point.
3. The absorption of heat provides enough energy for some molecules to overcome the attraction interactions of their neighbors and escape into the vapor phase, resulting in sublimation. Therefore, It is an endothermic transition because the process requires more energy.
4. It is commonly used to distinguish sublimated compounds from non-sublimation impurities.
5. Since, Camphor is a sublimable volatile substance in this mixture, the Sublimation method used to extract camphor from salt
6. Camphor evaporates when we heat the mixture, leaving salt behind that can be collected later.

Therefore, Sublimation is used to separate camphor and salt.