A) \[0.5\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
B) \[1.0\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
C) \[1.5\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
D) \[2.0\,J{{K}^{-1}}\,mo{{l}^{-1}}\]
Correct Answer: A
Solution :
Key Idea \[\Delta S=\frac{\Delta {{H}_{vap}}}{{{T}_{b}}}\] Here, \[\Delta {{H}_{vap}}=186.5\,\,J\,\,mo{{l}^{-1}}\] \[{{T}_{b}}=373\,K\] \[\therefore \] \[\Delta S=\frac{186.5}{373}\] \[=0.5\,J{{K}^{-1}}mo{{l}^{-1}}\]
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