Question

How will you separate a mixture of common salt, chalk powder and powdered camphor? Explain

Answer 1

Hint: There are the various methods to separate the mixture such as filtration, Distillation, Chromatography, Extraction, Evaporation and Sublimation. These are depending on the nature of compounds.

Complete answer:
In the given question we have three compounds such as common salt, chalk powder and powdered camphor. Let discuss them one by one how they can be separated,
We know when we heat powdered camphor it sublime so this mixture can be separated by sublimation. We can separate the mixture of common salt and chalk powder by putting the mixture in water. As we know that common salt is a homogeneous mixture, so it will dissolve with water uniformly and chalk powder is heterogeneous so it could be separated by the filtration method by using filter paper.

Additional information:
Filtration: It is the simplest method used to separate the mixture. If one of the components is a liquid and the other is a solid, filtration is as easy as pouring the whole mixture through a filter paper.
Distillation: When one compound is dissolved in another, or when two liquids are mixed together, the most commonly used method to separate them is distillation.
Sublimation: sublimation is the process to convert the solid into gaseous phase without going to liquid phase. This method is used to separate that type of compound which directly sublime when they are heated.

Note:
The mixture of common salt and chalk powdered separate on the basis of their solubility, we know common salt is soluble in water whereas the chalk powder is insoluble in water. On filtering chalk powder is obtained as a residue on the filter paper and the filtrate is evaporated to obtain the common salt.