A) \[-126.7\text{J}{{\text{K}}^{-1}}\]
B) \[+126.7\,\text{J}{{\text{K}}^{-1}}\]
C) \[-324.9\,\text{J}{{\text{K}}^{-1}}\]
D) \[324.9\,\text{J}{{\text{K}}^{-1}}\]
Correct Answer: C
Solution :
\[\Delta {{G}^{o}}=\Delta {{H}^{o}}-T\Delta {{S}^{o}}\] \[\Delta {{H}^{o}}=2\times \Delta H_{f}^{o}\] \[=-571.6\,\text{kJ/mol}\] \[-474.78=-571.6-298\times \Delta {{S}^{o}}\] \[\Delta {{S}^{o}}=-324.9J{{K}^{-1}}\]You need to login to perform this action.
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