the concentration of reactant molecules at the active centres of the catalyst becomes high due to adsorption

in the process of adsorption , the activation energy of the molecules becomes large

adsorption produces heat which increases the speed of the reaction

adsorption lowers the activation energy of the reaction.

polar at outer surface but non polar at inner surface

polar at inner surface non polar at outer surface

distributed over all the surface

are present in the surface only.

On increasing temperature adsorption increases continuously.

Enthalpy and entropy change is negative.

Adsorption is more for some specific substance.

It is a reversible reaction.

Dialysis

Condensation

Filteration by animal membrane

By adding electrolyte