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What is n?

Posted: Tue Feb 07, 2017 12:27 am
by Tara_Hekmati_3B
Sometimes n represents the number of electrons in the half reaction, but other times it is the change in the moles throughout the reaction. Could it be either or is it really just one? If you are not told to find the half reactions of the redox equation, do you have to find them anyway to find n if the question is asking for the Gibbs Free Energy?

Lmk. Thanks.

Re: What is n?

Posted: Tue Feb 07, 2017 10:03 am
by Garrett_Reynolds_1D
Using the equation: W(max)=ΔG=-nFE, n represents the total number of moles transferred.

Re: What is n?

Posted: Tue Feb 07, 2017 10:38 am
by Kevin Le 1L
"n" typically stands for the number of moles.

Re: What is n?  [ENDORSED]

Posted: Tue Feb 07, 2017 12:10 pm
by Cliff Danza 3F
For that equation specifically "n" refers to the moles of electrons being transferred in the balanced redox reaction. So yes you will need to know that balanced value if asked for the Gibbs Free energy, which requires balancing the redox equation.

Re: What is n?

Posted: Sun Feb 12, 2017 5:24 pm
by SoJeong Lee
n refers to the numbers of moles and it is important to plug it in when doing the math problems.

Re: What is n?

Posted: Sun Feb 12, 2017 11:54 pm
by Catherine_Zhang_1H
If you're just looking to calculate and solve that equation, an easy way to think of it would be the number of electrons transferred in the redox reaction. That value would be n.

Re: What is n?

Posted: Mon Feb 13, 2017 2:36 pm
by William Weng 2L
Correct me if I am wrong, but I think n always stands for number of moles right?

Re: What is n?

Posted: Sun Feb 19, 2017 11:41 pm
by Jessica Pak 2F
n will always be number of moles (of molecules, or in this case, e-). I think that it should be assumed that the value of n should be the number of electrons in the balanced equation, which could sometimes also be the same number in the half reaction.

Re: What is n?

Posted: Wed Feb 22, 2017 6:39 pm
by samuelkharpatin2b
n represents the number of moles of electrons transferred, and that number can be found by looking at the balanced half reactions. The coefficient in front of the e- is the value used for n.