Question
Question: What will be the effect of increase in temperature on physical adsorption....
What will be the effect of increase in temperature on physical adsorption.
A
It will decrease
B
It will increase
C
First increase then decrease
D
None of these
Answer
It will decrease
Explanation
Solution
Since adsorption is an exothermic process (taking place with the evolution of heat) therefore in accordance with Lechatelier's principle, the magnitude of physical adsorption will decrease with the increase in temperature. In case of chemisorption the adsorption first increase and then decreases with increase in temperature.