Question:

The extent of adsorption of adsorbate from the solution phase increases with ________.

(i) increase in the amount of adsorbate in solution.

(ii) the decrease in surface area of the adsorbent.

(iii) increase in temperature of the solution.

(iv) the decrease in the amount of adsorbate in solution

Solution:

Option (i) increase in the amount of adsorbate in solution is the answer.