Question:medium
The entropy of vaporisation of benzene is $85 \text{ J K}^{-1} \text{ mol}^{-1}$. When 117 g of benzene vaporises at its boiling point, what is entropy change of surrounding if process is at equilibrium?
The entropy of vaporisation of benzene is $85 \text{ J K}^{-1} \text{ mol}^{-1}$. When 117 g of benzene vaporises at its boiling point, what is entropy change of surrounding if process is at equilibrium?
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Equilibrium rule:
$\Delta S_{\text{total}} = 0$
System $\uparrow$ $\Rightarrow$ Surroundings $\downarrow$
Updated On: May 8, 2026
- $-85 \text{ J K}^{-1}$
- $-85 \times 1.5 \text{ J K}^{-1}$
- $85 \times 1.5 \text{ J K}^{-1}$
- $42.5 \text{ J K}^{-1}$
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The Correct Option is B
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