Factors affecting Solubility;

Solubility of

v Solid in Liquid

v Gas in Liquid

v Liquid in Liquid

Solid in Liquid:

When Solute  is in solid form and  solvent  is in liquid form and then solid dissolve in the liquid.

Factors:

o   Nature: If Nature is Same, solubility is good.

E. g.- Polar solute in polar solvent.

o   Surface Area:  If surface area of the solute is more, solubility increases.

o   Temperature: When we dissolve solid into liquid, two reaction occursà

§  Exothermic:  Heat releases for dissolve.

§  Endothermic: It absorb heat for dissolve.

 

Gas in Liquid:

When solute is in gas form and solvent is in liquid form.

-         Nature does not affect the solubility.

Factors:

o   Surface area: Directly proportional to solubility.

o   Temperature: 


o   Pressure: Pressure is Proportional to solubility. [Henry’s Law]

 

Liquid in Liquid:

When both solute and solvent is in liquid form.

Factors:

o   Nature: Like Dissolve like Method.

o   Temperature: Temperature is proportional to Solubility.

o   Pressure: Pressure is proportional to Solubility.

o   Surface area: Surface area is proportional to Solubility.

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