During the melting of a slab of ice at 273 K | vedclass

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(D) When ice melts into water at $273 \ K$,the density of water is greater than that of ice,which means the volume of the system decreases $(V_{final}

Vedclass · Accepted Answer

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

Vedclass · Answer

(D) When ice melts into water at $273 \ K$,the density of water is greater than that of ice,which means the volume of the system decreases $(V_{final} Since work done by the system is given by $W = P \Delta V$,and $\Delta V$ is negative,the work done by the system is negative. This implies that positive work is done on the ice-water system by the atmosphere.According to the first law of thermodynamics,$\Delta U = \Delta Q + \Delta W$.Since the system absorbs heat during melting,$\Delta Q$ is positive.Because the volume decreases,the work done on the system is positive,meaning $\Delta W$ (work done on the system) is positive.Therefore,$\Delta U = \Delta Q + \Delta W$ results in a positive value,indicating that the internal energy of the ice-water system increases.

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

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