Which of the following is not the characteristic of physisorption?

Enthalpy of adsorption is high

If the accumulation of gas on the surface of a solid occurs on account of weak van der Waals’ forces, the adsorption is termed physical adsorption or physisorption.

Characteristics of Physisorption are-

   It is a Reversible process.

   It is not specific in nature.

   It depends on the nature of the gas. More easily liquefiable gases are adsorbed readily.

   Enthalpy of adsorption is low.

   Low temperature is favourable for adsorption.

   There is no necessity for activation energy.

   It depends on the surface area.