Question

Given below are two statements, one is labeled as Assertion (A), and the other one is labeled as Reason (R).
Assertion (A): The molality of a solution in a liquid state changes with temperature.
Reason (R): The volume of a solution changes with a change in temperature.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
• B. Both (A) and (R) are correct and (R) is NOT the correct explanation of (A).
• C. (A) is correct but (R) is not correct.
• D. (A) is not correct but (R) is correct.

Hint:

To remember concentration behaviors:
- Mass-based terms (molality, mass percentage, mole fraction) do NOT change with temperature.
- Volume-based terms (molarity, normality, volume percentage) DO change with temperature.

Answer 1

The Correct Option is D