2. Which of the following assertions about the extent of physisorption is correct? a) Increases with increase in temperature b) Decreases with increase in surface area c) Decreases with increase in the strength of Van der Waals forces d) Decreases with increase in temperature
Answer: d Explanation: The process of physisorption is exothermic. A reduction in temperature, according to Le-principle, Chatelier favours an exothermic reaction. As a result, as the temperature rises, the amount of physisorption reduces.
