Question

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 $\pi = CRT$ (where $C$ is the molarity of the solution)
• C. Decreasing order of osmotic pressure for $0.01 \,M$ aqueous solutions of barium chloride, potassium chloride, acetic acid and sucrose is $BaCl_2 > KCl > CH_3COOH >$ 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 1

Answer: (A)

The value of $K_f$ depends upon the nature of the solvent. Thus, two different solutions of sucrose of same molality prepared in different solvents will have the different depression in freezing point.