NEET Chemistry (general) MCQ Question
Which of the following statements about ideal solutions and their vapor pressures is correct?
Raoult's law applies to ideal solutions, where the total vapor pressure is the sum of the partial pressures of each component.
In an ideal solution, the vapor pressure of the solute is always higher than that of the solvent.
The relative lowering of vapor pressure is independent of the mole fraction of the solute in an ideal solution.
Ideal solutions exhibit negative deviations from Raoult's law under all conditions.
Correct Answer
Detailed Explanation
Raoult's law states that in an ideal solution, the total vapor pressure is the sum of the partial pressures of each component, which aligns with the data provided about acetone and chloroform. Statement B is incorrect as the solvent typically has a higher vapor pressure. Statement C is misleading as the relative lowering of vapor pressure is equal to the mole fraction of the solute. Statement D is incorrect because ideal solutions do not necessarily exhibit deviations from Raoult's law.
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