Lyndon's Worksheet #3

$\Delta G^{\circ} = -nFE_{cell}^{\circ}$

Michelle Song 1G
Posts: 30
Joined: Wed Nov 14, 2018 12:23 am

Lyndon's Worksheet #3

I'm confused why you can't add the two reactions to make a new reaction and have to convert to G. I thought that was how all redox reactions were solved and I don't understand why this reaction is different.

Kathryn 1F
Posts: 66
Joined: Fri Sep 28, 2018 12:19 am

Re: Lyndon's Worksheet #3

So because E^o is an intensive property (does not change with amount of substance), you can't add 2 together for different reactions like you could with gibbs. This is why we have to convert to gibbs first, then add to get delta G total, then convert back to E^o total.

This is separate from adding the E for something like a galvanic cell, because those are considered 2 half-reactions that you add to get 1 full reaction. In the question we are combining 2 separate reactions.