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Calculate OG○(in kJ/mol) for the following reaction at 1 atm and 25○C:
OHf○C2H6 (g) = - 84.7 kJ/mol; S○C2H6 (g) = 229.5 J/K · mol; OHf○CO2 (g) = - 393.5
kJ/mol; S○CO2 (g) = 213.6 J/K · mol; OHf○H2O (l) = - 285.8 kJ/mol; S○H2O (l) = 69.9 J/K ·
mol
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