This Nernst equation calculator estimates the reduction potential (E) for a cell by considering the standard half-cell reduction potential (E) at room temperature, no. of moles of electrons transferred in the cell (z), chemical activity for the reductant species (aRed) and the one for the oxidant species (aOx).


Standard Half-Cell Reduction Potential (Eº):*
Number of Moles of Electrons Transferred in the Cell (z):*
Chemical Activity for the Reductant Species (aRed):*
Chemical Activity for the Oxidant Species (aOx):*

How does this Nernst equation calculator work?

The algorithm of this Nernst equation calculator takes account of the following variables that should be provided:

■ Standard Half-Cell Reduction Potential (E) measured in Volt. Please note that the standard half-cell reduction potential is considered by default to be for a cell at room temperature of 25°C.

However if you operate with temperatures expressed in other measurement units such as Kelvin or Fahrenheit you can discover the equivalent value of 25°C by using this temperature converter or this conversion calculator, or simply by using the following temperature conversion rules:

  from Celsius to Celsius
Fahrenheit [°F] = [°C] x 9/5 + 32 [°C] = ([°F] - 32) x 5/9
Kelvin [K] = [°C] + 273.15 [°C] = [K] - 273.15

■ Number of Moles of Electrons Transferred in the Cell (z) which should be greater than zero.

■ Chemical Activity for the Reductant Species(aRed) which is mandatory to be greater than zero.

■ Chemical Activity for the Oxidant Species(aRed) which should be a positive, non-zero value too.

Nernst equation = E0 – (0.05916/z) * log10(aOx/aRed)

The reduction potential (E) that results by using this formulas is in volts.

13 Aug, 2015 | 0 comments

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