Question
Chemistry Question on Surface Chemistry
Which one of the following is not a property of physical adsorption?
A
Higher the pressure, more the adsorption
B
Lower the temperature, more the adsorption
C
Greater the surface area, more the adsorption
D
Unilayer adsorption occurs
Answer
Unilayer adsorption occurs
Explanation
Solution
In physical adsorption, forces of attraction involved between adsorbent and adsorbate are weak, long-range van der Waals forces. The adsorption is generally multilayered.
So, the correct option is (D): Unilayer adsorption occurs.