Write the Difference between Physisorption And Chemisorption

Answer:- Due to the creation of van der Waals forces, physisorption occurs. It is inherently reversible. The nature of physisorption is not specified. Low temperature and activation energy are favored. In Physisorption, the enthalpy change is between 20 and 40 kJ/mol.

The creation of chemical bonds is the cause of chemisorption. It is intrinsically irreversible. It is quite particular in nature. It favors elevated temperatures and activation energies. In chemisorption, the enthalpy change is between 80 and 240 kJ/mol.