Which one of the following statements is false?

Question

Which one of the following statements is false? (A) Raoult’s law states that the vapour pressure of a component over a binary solution of volatile liquids is directly proportional to its mole fraction. (B) Two sucrose solutions of the same molality prepared in different solvents will have the same depression of freezing point. (C) The correct order of osmotic pressures of 0.01 M solution of each compound is BaCl2 > KCl > CH3COOH > glucose. (D) In the equation osmotic pressure π = MRT, M is the molarity of the solution.

Tardigrade Admin · Accepted Answer

ΔTf = Kf × m Kf is a characteristic of a particular solvent i.e., it will be different for different solvents.

Q. Which one of the following statements is false?

Raoult’s law states that the vapour pressure of a component over a binary solution of volatile liquids is directly proportional to its mole fraction.

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

The correct order of osmotic pressures of 0.01 M solution of each compound is $B a C l_{2} > K Cl > C H_{3} COO H >$ glucose.

In the equation osmotic pressure $π = MRT, M$ is the molarity of the solution.

$Δ T_{f} = K_{f} \times m$
$K_{f}$ is a characteristic of a particular solvent i.e., it will be different for different solvents.

Q. Which one of the following statements is false?

Raoult’s law states that the vapour pressure of a component over a binary solution of volatile liquids is directly proportional to its mole fraction.

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

The correct order of osmotic pressures of 0.01 M solution of each compound is BaCl2​>KCl>CH3​COOH> glucose.

In the equation osmotic pressure π=MRT,M is the molarity of the solution.

ΔTf​=Kf​×m Kf​ is a characteristic of a particular solvent i.e., it will be different for different solvents.

The correct order of osmotic pressures of 0.01 M solution of each compound is $B a C l_{2} > K Cl > C H_{3} COO H >$ glucose.

In the equation osmotic pressure $π = MRT, M$ is the molarity of the solution.

$Δ T_{f} = K_{f} \times m$
$K_{f}$ is a characteristic of a particular solvent i.e., it will be different for different solvents.