Difference between Physisorption and Chemisorption
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Answer:
It is reversible in nature. It is irreversible in nature. Physisorption is not specific in nature. ... Chemisorption has high adsorption enthalpy nearly 80 to 240 kJ/mol
Physisorption It is due to the formation of van der Waals forces.
Chemisorption It is due to the formation of chemical bonds.
It is reversible in nature.
Chemisorption It is irreversible in nature.
Physisorption is not specific in nature.
It is very specific in nature.
It has low adsorption enthalpy nearly 20 to 40 kJ/mol. Chemisorption has high adsorption enthalpy nearly 80 to 240 kJ/mol.
It favours low temperature.
It favours high temperature.
Physisorption decreases with increase in temperature. Chemisorption increases with increase in temperature.
It results in a multimolecular layer. It results in a unimolecular layer.
Activation energy is less in physisorption. Activation energy is high in chemisorption.
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