HI all,
I'm looking at the value for the gibbs energy of formation of water (to be -273.13kJ/mol) however when I compute the values for its enthalpy (-285.83kJ/mol) and entropy (+69.91J/mol)I dont get the same answer, just really confused here. I used the G=H-TS equation.
Also how is the gibbs free energy of hydrogen gas and oxygen gas zero when they have entropies values? enthalpy values are zero yes but what about the entropy ?