Assertion (A) Molality of a solution increases with temperature. Reason (R) Molality expression does not…
Assertion (A) Molality of a solution increases with temperature.
Reason (R) Molality expression does not involve any volume term.
Both $A$ and $R$ are correct, $R$ is the correct explanation of $A$.
Both $A$ and $R$ are correct, $R$ is not the correction explanation of $A$.
A is correct, $\mathrm{R}$ is not correct.
A is not correct, $R$ is correct.
Solution
Assertion is incorrect while Reason is correct. Molality is defined in terms of the solvents mass, not by its volume, thus temperature does not change the molality of a solution.