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Question
Assertion :Water in liquid state is more stable than ice at room temperature. Reason: Water in liquid form has higher entropy than ice.
Assertion :Water in liquid state is more stable than ice at room temperature. Reason: Water in liquid form has higher entropy than ice.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
At room temperature water is more stable because ice will tend to melt at room temperature.
The change in entropy of the system during the phase change is, in this case, given by the heat absorbed by the ice divided by its temperature:
ΔS=QT=mLT which is positive. This shows that the entropy of an amount of ice at 0∘C is less than the entropy of the same amount (mass) of water at 0∘C.
At room temperature water is more stable because ice will tend to melt at room temperature.
The change in entropy of the system during the phase change is, in this case, given by the heat absorbed by the ice divided by its temperature:
ΔS=QT=mLT which is positive. This shows that the entropy of an amount of ice at 0∘C is less than the entropy of the same amount (mass) of water at 0∘C.
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