Question

Which of the following statements is not true about physisorption?

Options

• The forces operating are weak van der Waals forces.

• It is not specific in nature.

• It is irreversible.

• The heat of adsorption is low and lies in the range of 20-40 kJ mol⁻¹.

Answer 1

It is irreversible.

Explanation:

Physisorption is reversible.