During the melting of a slab of ice at 273 K at atmospheric pressure: [2025]

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Q.
During the melting of a slab of ice at 273 K at atmospheric pressure: [2025]

1 Internal energy of ice-water system remains unchanged.

2 Positive work is done by the ice-water system on the atmosphere.

3 Internal energy of the ice-water system decreases.

4 Positive work is done on the ice-water system by the atmosphere.

Ans.
(4)

Melting of ice requires heat therefore internal energy increases. But because of decrease in volume the work done on atmosphere is negative or atmosphere does positive work on ice-water system.

Solution

Q.
During the melting of a slab of ice at 273 K at atmospheric pressure: [2025]

1 Internal energy of ice-water system remains unchanged.

2 Positive work is done by the ice-water system on the atmosphere.

3 Internal energy of the ice-water system decreases.

4 Positive work is done on the ice-water system by the atmosphere.

Ans.
(4)

Melting of ice requires heat therefore internal energy increases. But because of decrease in volume the work done on atmosphere is negative or atmosphere does positive work on ice-water system.

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Solution

Q. During the melting of a slab of ice at 273 K at atmospheric pressure: [2025]

1 Internal energy of ice-water system remains unchanged.

2 Positive work is done by the ice-water system on the atmosphere.

3 Internal energy of the ice-water system decreases.

4 Positive work is done on the ice-water system by the atmosphere.

Ans. (4) Melting of ice requires heat therefore internal energy increases. But because of decrease in volume the work done on atmosphere is negative or atmosphere does positive work on ice-water system.

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Q.
During the melting of a slab of ice at 273 K at atmospheric pressure: [2025]

Ans.
(4)

Melting of ice requires heat therefore internal energy increases. But because of decrease in volume the work done on atmosphere is negative or atmosphere does positive work on ice-water system.