Q.

During the melting of a slab of ice at 273 K at atmospheric pressure:(i) positive work is done by the ice-water system on the atmosphere(ii) positive work is done on the ice-water system by the atmosphere(iii) the internal energy of the ice-water system increases(iv) the internal energy of the ice-water system decreases

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Detailed Solution

During melting of ice at 273 K, the ice melts to water and there is a decrease in volume.Hence atmosphere will do positive work.⇒Positive work is done on ice-water system by the atmosphere and the internal energy of the ice-water system increases.
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