Question

Describe the method, which can be used to separate two compounds with different solubilities in a solvent S.

Answer 1

As we know that to get pure substance we need to purify the mixture. The mixture can be solid, liquid, and gas. Generally, a solution made of two or more things and it has two major parts that is the solvent and solute.

Complete answer:
Firstly, let's have a look at solvent, solute, etc.

Solvent - It is a substance in which solute dissolved.
The solution can be homogeneous and heterogeneous.
Homogeneous - In this mixture components mixed in the same proportion.
Heterogeneous - In this type of mixture components are mixed in a different proportion. There is no fixed ratio.

According to the question we have two compounds with different solubilities, it can be separated by Fractional Crystallization. In this method, a fractionate compound in the form of crystal. When temperature increases or decreases precipitate formed in solution. Thus, when the hot solution starts cool, less soluble converts into crystal while more soluble remains in the solution. Repeat this process again and again then we will get the separated compounds.

This method is used to separate solid mixtures like $KN{O_3}$ and $KCl{O_3}$ .

Note: Refining is also known as the process of purification. It is used for natural resources like petroleum. Fractional distillation is the method used to purify the petroleum. The solubility of any substance depends on the temperature, pressure as well as the physical and chemical property of the substance. precipitate - When a solid part formed in solution is known as a precipitate. It is available in suspension. Suspension- It is a heterogeneous mixture in which solid part particles present that can easily be seen.