Chemistry - Surface Chemistry Question with Solution | TestHub

Physical adsorption occurs due to weak van der Waals forces and is an exothermic process.

According to Le Chatelier’s principle, increasing temperature opposes adsorption.

Therefore, the amount of gas adsorbed decreases as temperature increases.

At higher temperatures, adsorbed molecules gain kinetic energy and leave the surface more easily.

Hence, the adsorption vs temperature curve shows a continuous decrease with increasing temperature.

This behavior is represented by Option (B).