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In the equation ΔG° = -nFE° we end up with units of joules while with the equation ∆G°=-RTlnK, we end up with units of joules per mole. How is this possible, and is there a way for ΔG° = -nFE° to yield units joules/mole?
The answer to this can be found on page 571 of the textbook in the green box. The more technical form of the equation is written as ∆Gr = - nrFE where the subscript r represents the "molar" form where n is plugged in as just a number, without the mole units. So, if there were 2 moles, then you would plug in 2 to the equation, not 2 moles, so that the units of ∆G come out to be joules/mole. I'm not sure exactly when to use this versus the other form, but I just know that sometimes you have to do it this way.
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