Which of the following statements is false? - Vidyadip

MCQ

Which of the following statements is false?

A
Two different solutions of sucrose of same molality prepared in different solvents will have the same depression in freezing point.
B
The osmotic pressure of a solution is given by the equation $\pi=\text{CRT}$ (where C is the molarity of the solution).
C
Decreasing order of osmotic pressure for 0.01M aqueous solutions of barium chloride, potassium chloride, acetic acid and sucrose is BaCl₂> KCl > CH₃COOH > sucrose.
D
According to Raoult's law, the vapour pressure exerted by a volatile component of a solution is directly proportional to its mole fraction in the solution.

✓

Answer

Two different solutions of sucrose of same molality prepared in different solvents will have the same depression in freezing point.

Explanation:

Tf = Kfm Since Kf values depend upon the nature of solvent, the depression in freezing point of the solution would not be the same.

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