Deriving the Nernst Equation

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Verity Lai 2K
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Joined: Sat Aug 24, 2019 12:18 am

Deriving the Nernst Equation

Postby Verity Lai 2K » Wed Feb 26, 2020 3:12 pm

Could someone please remind me how to derive the Nernst equation??

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Re: Deriving the Nernst Equation

Postby Veronica_Lubera_2A » Wed Feb 26, 2020 3:41 pm

You need 2 formulas:

1. DeltaG=-nFE*
2. DeltaG=DeltaG* + RTlnQ

Combine rections:
E(cell)= E*(cell)-(RT/nF)lnQ

It is also important to know that at 25 degrees C (so standard conditions),

E(cell)= E*(cell) - (0.0592V/n)logQ

Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

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