Assertion : Water in liquid state is more stable than ice at room…

MCQ

Assertion : Water in liquid state is more stable than ice at room temperature.
Reason :Water in liquid form has higher entropy than ice.

✓
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

✓

Answer

Correct option: A.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

a
At room temperature water is more stable because ice will tend to melt at room temperature. So, $A$ is true. But water will have larger entropy than ice because ice absorbs heat to be converted into water. $\Delta S = \frac{{\Delta H}}{T}$ We know that greater the entropy, greater the stability. Hence, water is more stable than ice. Both $A$ and $R$ is true and $R$ explains $A$.