Q.

Which of the following statements is false?

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

The osmotic pressure of a solution is given by the equation,π = CRT (where, C is the molarity of the solution) BaCl2>KCl>CH3COOH> sucrose

Decreasing order of osmotic pressure for 0.01 M aqueous solutions of barium chloride, potassium chloride, acetic acid and sucrose is:

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 is A.

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Detailed Solution

According to the definition of depression in freezing point, ΔTf=Kfm where, Kf = freezing point depression constant, value of Kf depends upon nature of solvent. That is why two different solutions of sucrose of same molality prepared in different solvents will have different depression in freezing point.

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