Referring to this equation as applying to REDOX reactions implies it does not apply to other reactions.
That is misleading because this equation applies to all chemical reactions (at least from what I know within the scope of the MCAT).
Ex.: 2NO2(g) <=> N2O4(g)
Nitrogen and oxygen on both sides have oxidation numbers of +4 and -2, respectively. So, it is not a REDOX reaction, but of course still has a delta G, like any reaction.
I'd also point out that in the Khan Academy video about delta G, this equation is referred to as applying to "a generic reaction where reactants turn into products."
So it does not necessarily have to be a redox reaction.
Uncertain as to the necessity of the propose change, for the level of the MCAT.
