Question

In chemisorption, why x/m initially
increases and then decreases with rise in
temperature?
​

Answer 1

Answer:

Because chemisorption involves a high activation energy. so, it first increases and then decreases with increase in temperature. The initial increase is due to the heat supplied which act as activation energy required in chemisorption. But later it decreases due to exothermic nature of adsorption at euilibrium.

Answer 2

In chemisorption, the extent of adsorption x/m increases first with the rise in temperature because the chemical reaction involved in chemisorption requires activation energy initially i.e heat is absorbed for activation which causes increase in adsorption but later on chemisorption decreases with the rise in temperature due to exothermic nature of chemisorption.