During the melting of a slab of ice at 273 K at atmospheric pressure

Question

During the melting of a slab of ice at 273 K at atmospheric pressure (A) positive work is done by the ice-water system on the atmosphere (B) positive work is done on the ice-water system by the atmosphere (C) internal energy of ice-water system decreases (D) none of the above

Tardigrade Admin · Accepted Answer

When a slab of ice at 273 K melts, volume of water formed is less than the volume of ice melted ie, volume decreases. Therefore, work done by ice-water system is negative or in other words positive work is done by the atmosphere on the ice-water system. This increases the internal energy of ice-water system.

Q. During the melting of a slab of ice at 273K at atmospheric pressure

positive work is done by the ice-water system on the atmosphere

positive work is done on the ice-water system by the atmosphere

internal energy of ice-water system decreases

none of the above

Q. During the melting of a slab of ice at $273 K$ at atmospheric pressure