Calculate the value of ΔGo in kJ for the combustion of 1 mole of methane to form carbon dioxide and gaseous water at 298 K. (value ± 2) So given below in J/mol K S° (CH4(g)) = 186. S° (O2(g)) = 209. S° (CO2(g)) = 217. S° (H2O(g)) = 188. ΔHfo given in kJ/mol ΔHfo (CH4(g)) = -74.  ΔHfo (CO2(g)) = -399. ΔHfo (H2O(g)) = -231.

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