What is the importance of Solubility Product?

The concept of solubility product is very useful in explaining many phenomenons. Various fields in which it can be used are:-

1. Calculation of solubility: If we know the solubility product of a meagerly soluble salt like AgCl  we can calculate the solubility of the salt.

2. In predicting the precipitation in reactions: If we know the solubility product of a salt,  we can find whether on mixing the solution of its ions, precipitation will occur or not. Following are the two conditions:-

Ionic product > Ksp (solubility product) then precipitation will occur
Ionic product < Ksp (solubility product) then precipitation will not occur

3. In inorganic qualitative analysis:
The concept of solubility product and common ion effect play a vital role in the separation of basic radicals i.e. cations into different groups of qualitative analysis.

4. Purification of sodium chloride:
Sodium Chloride obtained from sea water or lakes is always impure. It can be purified on the basis of common ion effect.

Category: Ionic Equilibria

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