Question

In physical adsorption the approximale heat energy evolved in kJ/mol is
(B)
40-60
(A)
20-40
40-400
(D)
60-80
(C)​

Answer 1

Answer:

Physical adsorption involves weak forces of attraction between adsorbate and adsorbent molecules.

Thus, it requires less heat for adsorption (i.e. between 20 - 40 KJ/mol).