Question

Interpret the correct statement for the following figure.

• A. Vapour pressure of the solution in beaker $A$ is more than in the beaker $B$
• B. Vapour pressure of the solution in beaker $A$ is less than in the beaker $B$
• C. Vapour pressure of the solution in both the beakers is same
• D. None of the above

Answer 1

Answer: (A)

Vapour pressure of pure solvent is higher than the vapour pressure of solution, because solute particles occupy some surface sites and hence, less surface is available for evaporation.