What is the entropy change in $\mathrm{JK}^{-1}$ during the melting of $27.3 \mathrm{~g}$ of ice at…

What is the entropy change in $\mathrm{JK}^{-1}$ during the melting of $27.3 \mathrm{~g}$ of ice at $0^{\circ} \mathrm{C}$ ? (Latent heat of fusion of ice $=330 \mathrm{Jg}^{-1}$ )
  1. 330
  2. 12.1
  3. 3.3
  4. 33

Solution

$\begin{aligned} \Delta S_f & =\frac{\Delta H_f}{T_f} \\ & =\frac{330 \times 27.3}{273} \\ & =33 \mathrm{JK}^{-1}\end{aligned}$ .

Asked in: JEE-TOPICTESTS-CHEMISTRY

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