Question

: Higher the molal depression constant of the solvent used, higher the freezing point of the solution. : Depression in freezing point does not depend on the nature of the solvent.

• A. If both Assertion: and Reason: are true and the Reason: is the correct explanation of the Assertion
• B. If both Assertion: and Reason: are true but the Reason: is not the correct explanation of the Assertion
• C. If Assertion: is true but Reason: is false
• D. If both Assertion: and Reason: are false

Answer 1

Answer: (D)

If both Assertion: and Reason: are false

Answer 2

$\Delta T_{f} \propto K_{t} \cdot m$ $T_{0}-T_{j} \propto K_{f} \cdot m$ Thus, higher the molal depression constant, $k_{f}$ of the solvent used, higher the freezing point of the solution.