What is the Nernst equation?

1 Answer
Dr. Hayek
Jan 24, 2016

#E=E^@-(RT)/(nF)lnQ#

Explanation:

The Nernst Equation is the relationship between the cell potential and the concentrations of the solutions at the cathode and the anode. It is given by:

#E=E^@-(RT)/(nF)lnQ#

where, #E# is the cell potential,
#E^@# is the cell potential at standard conditions,
#R# is the universal gas constant #R=8.3145 J/(K*mol)#
#T# is the Kelvin temperature,
#n# is the number of electrons exchange during the Redox reaction in the cell,
#F=96485 C/(mol" " e^-)# is Farady's constant,
and #Q# is the reaction quotient.

Here is a video that explains in details the origin and use of the Nernst equation:
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Electrochemistry | The Concentration Cell.

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