Question

Why lyophilic colloids are stable than lyophobic colloids explain?

Answer 1

           A lyophilic sol is stable due to the charge and the hydration of sol particles. ... On the other hand, a lyophobic sol is stable due to the charge only and hence can be easily coagulated by adding small amount of an electrolyte.

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Answer 2

Lyophilic sols are relatively stable as strong forces of interaction exist between colloidal particles and liquid.

lyophobic sols are less stable as weak forces of interaction exist between colloidal particles and liquid.