physical and chemical adsorption responds differently to rise in temperature. what is the difference and why is it so- explain answer with a graph

Physical adsorption decreases with increase in temperature. This is observed because physical adsorption involves bonds between adsorbent and adsorbate particles. These are weak forces such as van der Waal force of attraction and thus decrease with the increase in tempertaure, and thus the grapg show a decline with the increase in temperature.

Whereas, in case of chemical adsorption the graph first increases and then decreases. This is because of the fact that chemical adsorption involves chemical bondsor chemical interaction between the absorbent and adsorbate and initially a lot of energy is required in the form of activation energy to initiate the reaction. This then decrease as at higher temperature desorption takes place and the overall adsorption decreases.