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Half rxns

Posted: Wed Feb 27, 2019 11:43 pm
by Steven Garcia 1H
When given a chemical rxn and trying to determine if its spontaneous, are we allowed to ignored the coefficients of the given rxn when calculating the charge difference of the desired elements? and are we allowed to ignore the coefficients of the provided rxn when writing the corresponding half rxns?

I'm not sure if what I'm trying to say makes sense, but I'm referring to problems such as 14.23 in the textbook (6th edition).

Re: Half rxns

Posted: Thu Feb 28, 2019 6:07 pm
by Hovik Mike Mkryan 2I
Coefficients have to be taken into account when calculating the standard free energy with the use enthalpy, entropy. and temperature. Trying to figure out what the Delta G is what will define if it is spontaneous or not. Even for Delta G products - Delta G reactants calculation the coefficients need to be multiplied with the values. Hope this helped!