## Figuring out n

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

Aiden Metzner 2C
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Joined: Wed Sep 18, 2019 12:21 am

### Figuring out n

When using the equation G= -nFe how do we determine what n is?

Tai Metzger 3K
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Joined: Sat Aug 24, 2019 12:17 am

### Re: Figuring out n

n is the number of electrons transferred per reaction.

For example, in the reaction: Fe2+ + Cu --> Cu2+ + Fe n would equal 2.

I hope this helps!

Brianna Becerra 1B
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### Re: Figuring out n

n refers to the number of electrons being transferred which can be determined by looking at the balanced half-reactions and seeing how many electrons were added to either side of the equation. Make sure that the number of electrons in both half-reactions are equal to each other!

905373636
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### Re: Figuring out n

n is the mols of electrons transferred! Make sure not to find a common multiple, then, for example if for a reduction 2 electrons are transferred whereas for an oxidation 3 electrons are transferred -> common multiple 6 when balancing equations and 6 electrons are transferred; (n=6).

Hui Qiao Wu 1I
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Joined: Fri Aug 30, 2019 12:16 am

### Re: Figuring out n

Write out half rxns
Balance half rxns
Combine the two half rxns (when combining the two rxns, you should be canceling out electrons. The number of electrons, do not add up the number of electrons from both rxns, is your n).

Ying Yan 1F
Posts: 101
Joined: Fri Aug 02, 2019 12:16 am

### Re: Figuring out n

You would have to balance the redox half reaction to determine what n is, since n is the number of electrons needed to balance the redox reactions. Hope this helps!

205405339
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### Re: Figuring out n

n is the moles of electrons transferred so use the number of electrons found in the half reaction with the most electrons

805383532
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### Re: Figuring out n

In this equation, n is equal to the number of electrons being transferred, so you would first have to balance the half reactions.

Cavalli_1H
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### Re: Figuring out n

it is essentially the difference in moles between to sides of a reaction or the net transfer of moles

J_CHEN 4I
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### Re: Figuring out n

n is the number of electrons transferred in the reaction. Unless the number of e- transferred are clear from the reaction, you can always find the number of e- by balancing the half-reactions.

Veronica Lu 2H
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### Re: Figuring out n

n is the number of electrons that are transferred

KHowe_1D
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### Re: Figuring out n

n is the number of electrons transferred in a reaction.

AronCainBayot2K
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### Re: Figuring out n

n is determined by the amount of electrons transferred in the reactions, easier to find in half-reactions.

Bryce Barbee
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### Re: Figuring out n

n is the moles of electrons so you need to balance out the redox reaction in order to see how many electrons are being transferred.

kendal mccarthy
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Joined: Wed Nov 14, 2018 12:22 am

### Re: Figuring out n

You balance the redox reactions, and the least common denominator of electrons transfered on the product and reactant side is equivilant to n.

Ryan_K_1K
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Joined: Wed Nov 14, 2018 12:18 am

### Re: Figuring out n

n is the number of electrons needed to balance the reaction