Active charcoal has more adsorption power due to greater surface area.

Enzymes are biological catalysts and enhance the rate of biochemical reactions

The stability of a lyophilic sol is due to both the charge and solvation of particles, but largely to the latter factor.

Blood is a –vely charged colloidal system. Rest of the compounds, i.e., NaCl, urea & cane sugar form true solution in water.

The catalytic poisons decrease the activity of the catalyst because they are preferentially adsorbed on the surface of catalyst.

The above statement is the law proposed by Hardy-Schulze. According to this law, the coagulating power of an ion is directly proportional to the charge it possesses.e.g. Na⁺< Mg²⁺< Al³⁺

Adsorption theory is applied to heterogeneous catalysis.

For a reaction in equilibrium, the increase in rate of reaction in forward direction by catalyst increases the concentration of product(s) and thus the rate of backward reaction also increases with the same magnitude and allow the equilibrium to be achieved quickly.

Adsorption is accompanied by evolution of heat as the residual forces acting along the surface of adsorbent decrease i.e., adsorption is accompanied by decrease in enthalpy.

Adsorption is an exothermic process.