Disclaimer: I've never had a chemistry class in my life. I'm reading a journal article that states the following: S2O32- + 2O2 + H2O → 2SO42- + 2H+ has the standard Gibbs energy of −766 kJ/mol at 25ºC. So, this is energy produced per moles of what?! Reactant? Product? If so, which reactant or product and how do I figure that out? Or does it just mean that if I reacted 1 mole of thiosulfate with 2 moles of oxygen, I'd end up with 766 kJ of energy? Any help would be appreciated!