Question

Write three distinct feature of chemisorption which are not found in physie

Answer 1

(i) Chemisorption is caused by chemical bond formation where as physisorption arises due to Van der Waals’ forces.
(ii) Chemisorption is highly specific in nature whereas physisorption is not specific.
(iii) Chemisorption results into unimolecular layer whereas physisorption results into multimolecular layers.

Answer 2

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Chemisorption is a kind of adsorption which involves a chemical reaction between the surface and the adsorbate. Physisorption, also called physical adsorption, is a process in which the electronic structure of the atom or molecule is barely perturbed upon adsorption.