In reference to Freundlich adsorption isotherm

(i) In reference to Freundlich adsorption isotherm, write the expression for adsorption of gases on solids in the form of an equation.
(ii) Write an important characteristic of lyophilic sols.
(iii) Based on the type of particles of dispersed phase, give one example each of associated colloid and multimolecular colloid.

(i) Freundlich adsorption isotherm for adsorption of gases

(ii) Lyophilic sols are reversible sols. These are quite stable
and cannot be coagulated.
(iii) Associated colloid Soap solution, detergent.Multimolecular colloid Sulphur sol, gold sol.