Q18 / 160 · AP EAMCET 2011 · Chemistry

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 $=330 \mathrm{Jg}^{-1}$ )

A
330
B
12.1
C
3.3
Correct answer
D
33

Solution

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

Hence, the correct answer is option: 'D'.

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