Write a short note on Physiosorption.

Que.: Write a short note on Physiosorption.

Ans.:

It is also known as physical adsorption.
The reason behind physiosorption isVan der Waals forces.
Physical adsorption is reversible in nature.
It is not at all specific in nature.
Physisorption has a very low adsorption enthalpy of nearly about 20 to 40 kJ/mol.
It takes place favourably in low temperatures.
As the temperature increases the amount of physisorption taking place decreases.
Since physiosorption has weak Van der Waal forces, it results in a multimole-cular layer.
Physical adsorption has less activation energy.

Que.: Write a short note on Physiosorption.