Question

The incorrect statement pertaining to the adsorption of a gas on a solid surface is (are) :

• A. Adsorption is always exothermic
• B. Physisorption may transform into chemisorption at high temperature
• C. Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature
• D. Chemisorption is more exothermic than physisorption, however, it is very slow due to higher energy of activation

Answer 1

The correct option is C Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature

Physisorption increase with increasing temperature but chemisorption decreasing with temperature.

Here A, B, and D is the correct answer.