Question

Which of following is incorrect regarding physical adsorpton ?
More easily liquefiable gases are adsorbed easily
Physical adsorption is multilayerd
Enthalpy of adsorption (AHadsorption) is low and positive
It occurs because of vanderwaal forces​

Answer 1

Answer:

For physisorption, the enthalpy of adsorption (ΔH adsorption ) is low and negative.

Its value is -20 to -40 kJ/mol.

Note:

Physisorption occurs because of the presence of van der Waals forces between adsorbent and adsorbate molecules.

Liquefiable gases are adsorbed more easily as they have strong intermolecular attractive forces.