NEET Chemistry Colligative Properties Assertion Reason Question
Assertion (A): The addition of a non-volatile solute to a solvent results in the lowering of the solvent's vapor pressure. | Reason (R): The vapor pressure of a solvent is directly proportional to its mole fraction in the solution.
Both (A) and (R) are true, and (R) is the correct explanation of (A).
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(A) is true, but (R) is false.
(A) is false.
Correct Answer
Detailed Explanation
Both statements are true and Raoult's law, which relates vapor pressure to mole fraction, explains the lowering of vapor pressure when a non-volatile solute is added.
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