Nernst Equation derivation


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Sydney Pell 2E
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

Nernst Equation derivation

Postby Sydney Pell 2E » Wed Mar 04, 2020 2:03 am

What is the Nernst Equation derived from?

JohannaPerezH2F
Posts: 94
Joined: Wed Sep 18, 2019 12:18 am

Re: Nernst Equation derivation

Postby JohannaPerezH2F » Wed Mar 04, 2020 8:55 am

The Nernst Equation is derived from the Gibbs free energy under standard conditions.

Brianna Becerra 1B
Posts: 117
Joined: Fri Aug 02, 2019 12:16 am

Re: Nernst Equation derivation

Postby Brianna Becerra 1B » Wed Mar 04, 2020 10:56 am

The Nernst equation can be derived from ∆G = ∆G° + RT ln Q by substituting ∆G with -n F E(∆G = - n F E). You then divide both sides by - n F. You can then substitute - ∆G°/nF with E°. This then leaves you with E = E° - (RT/nF) lnQ !

Lauren Tanaka 1A
Posts: 109
Joined: Sat Aug 17, 2019 12:18 am

Re: Nernst Equation derivation

Postby Lauren Tanaka 1A » Wed Mar 04, 2020 7:17 pm

The Nernst equation can be derived using the equation for gibbs free energy. This equation is ∆G = ∆G˚ + RTlnQ. You can then set ∆G equal to -nFEcell and ∆G˚ to -nFE˚cell. Then you can divide both sides by -nF.


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