A) \[+\,84.420 J mo{{l}^{-}}^{1}\]
B) \[+\,84.4 J mo{{l}^{-}}^{1}\,{{K}^{-\,1}}\]
C) \[+\,8.442 J mo{{l}^{-}}^{1}\]
D) \[-\,84.4 J mo{{l}^{-}}^{1}\,{{K}^{-\,1}}\]
Correct Answer: B
Solution :
Given, \[\Delta {{H}_{vap}}\,\,=\,\,26kJ\,mo{{l}^{-\,1}}\,=\,\,26000\,J\,mo{{l}^{-\,1}}\] \[\operatorname{Tb}=35+273=308K\] \[\Delta {{S}_{vap}}=\frac{\Delta {{H}_{vap}}}{Tb}\] \[=\,\,\frac{26000\,\,J\,mo{{l}^{-\,1}}}{308\,K}\] \[= \,84.42 J{{K}^{-}}^{1}\,mo{{l}^{-}}^{1}\]You need to login to perform this action.
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