Question

Which one of the following statements is FALSE.

• A. The correct order of osmotic pressure for 0.01 M aqueous solution of each compound is $BaCl_{2} > KCl > CH_{3}COOH >$ sucrose.
• B. The osmotic pressure $(\pi)$ of a solution is given by the equation $\pi = MRT$ where M is the molarity of the solution.
• C. Raoult's law states that the vapour pressure of a component over a solution is proportional to its mole fraction.
• D. Two sucrose solutions of same molality prepared in different solvents will have the same freezing point depression.

Answer 1

Answer: (D)

Two sucrose solutions of same molality prepared in

different solvents will have the same freezing point depression.

Answer 2

The extent of depression in freezing point varies with the number of solute particles for a fixed solvent only and it is a characteristics feature of the nature of solvent also. So for two different solvents the extent of depression may vary even if number of solute particles be dissolved.