1 kg block of ice at 0° C is placed into a perfectly insulated, sealed container that has 2kg if water also at 0°C . The water and ice completely fill the container is flexible. After sometime one can except that

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The water will freeze so that the mass

of the ice will increase

The ice will melt so that the mass

of ice will decrease

Both the amount of water and the amount

of ice will remain constant

Both the amount of water and the amount

of ice will decrease

answer is B.

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Detailed Solution

In accordance to second law of thermodynamics, if an irreversible process occurs in a closed system, the entropy of that system always increase, it never decreases. As the ice is more ordered then water, i.e. it has less entropy. Therefore, the ice will melt so that the mass of the ice will decrease.

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