G=-nFe


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Jasleen Kahlon
Posts: 52
Joined: Wed Nov 21, 2018 12:19 am

G=-nFe

Postby Jasleen Kahlon » Sun Mar 08, 2020 11:30 pm

I know that in the G=-nFe equation, n is the number of electrons transferred. Does that mean the electrons transferred from 1 compound to another? I'm confused because in a lot of equations, everything rearranges from one side to the other...

lilymayek_1E
Posts: 107
Joined: Sat Aug 17, 2019 12:16 am

Re: G=-nFe

Postby lilymayek_1E » Sun Mar 08, 2020 11:43 pm

n indicates the number of electrons that are involved in the transfer between the oxidizing agent and reducing agent. When you have your two half-reactions for OX and RED, you have to balance your electrons to make sure your electron transfer is balanced out. The balanced value of electrons is what you use for the n value. This forum's https://chemistry.stackexchange.com/questions/5122/how-is-it-determined-how-many-electrons-are-transferred-in-redox-reactions top answer does a good job explaining this!

J Medina 2I
Posts: 102
Joined: Wed Sep 25, 2019 12:17 am

Re: G=-nFe

Postby J Medina 2I » Sun Mar 08, 2020 11:45 pm

n is the number of electrons transferred and can be seen in the half reactions when balanced. Since your redox half reactions are balanced, the number of electrons given off should be the same for both half-reactions.

405268063
Posts: 102
Joined: Thu Jul 25, 2019 12:17 am

Re: G=-nFe

Postby 405268063 » Sun Mar 08, 2020 11:45 pm

Yes, you basically just need to know that however many electrons you have in your overall balanced equation will be plugged into n.

Brandon Tao 1K
Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

Re: G=-nFe

Postby Brandon Tao 1K » Sun Mar 08, 2020 11:47 pm

n should be the same for redox reactions

Brandon Valafar
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Re: G=-nFe

Postby Brandon Valafar » Sun Mar 08, 2020 11:57 pm

The way I do it is however many electrons are in your balanced equation after you multiply and match the coefficients.

SarahCoufal_1k
Posts: 102
Joined: Thu Jul 25, 2019 12:17 am

Re: G=-nFe

Postby SarahCoufal_1k » Sun Mar 08, 2020 11:59 pm

n is the number of electrons transferred in the redox equation. When you do your reduction half reaction there is a certain amount of electrons transferred and same case for the oxidation half reaction. You then have to multiply the equations to balance the electrons. when they match and cancel that number is n

ValerieChavarin 4F
Posts: 99
Joined: Wed Sep 18, 2019 12:18 am

Re: G=-nFe

Postby ValerieChavarin 4F » Thu Mar 12, 2020 7:11 am

You have to look at the number of electrons transferred in the redox reaction. (Essentially, the number of electrons that balances the combined half-reactions.)


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