Solubility Theory Prespective Short

 When a substance dissolves in water, a solution formed. 

The ability of a substance to dissolve in a solvent is quantitatively known as its solubility.

 Solubility can be expressed in various ways such as soluble, freely soluble, slightly soluble, insoluble etc and in molarity, molality or percentage solution.

 Solubility is defined in quantitative term as the concentration of solute in a saturated solution at a certain temperature.

 In case of solid, solute is the powder, but in case of liquid in liquid solubility, the solute, is the material which is in smaller quantity. 

In qualitative way, it can be defined as the spontaneous interaction of two or more substances to form a homogenous molecular dispersion.

 Saturated solution is one in which the solute in solution is in equilibrium with the solid phase. 

Unsaturated or sub-saturated solution is one containing the dissolved solute in a concentration below that necessary for complete saturation at a definite temperature.

 Supersaturated solution is one that contains more of the dissolved solute than it would normally contain at a definite temperature.