Q. Which of the following characteristics is not correct for physical adsorption?
A) Adsorption on solids is reversible
B) Adsorption increases with increase in temperature
C) Adsorption is spontaneous
D) Both enthalpy and entropy of adsorption are negative
Explanation
(b)
When temperature increases, the adsorbed molecules get energy and desorption starts increasing, therefore adsorption decreases with increase in temperature
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.