[abe.nong]

My first post:

on galvanic cells, I understand the application of the Nernst Equation. However, there is a certain number in the equation that I do not know where it came from. In the equation, there is the number 0.05916 what is the significance of the number, and how was it derived?

Thanks.

abe.nong

[UG]

The 'full' Nernst equation can be written as E = E° - RT/nF ln Q
The number 0.05916 is derived from RT/F x 2.302585 where R = 8.314 J mol^-1 K^-1, F = 96485 C and they assume the temperature is 298.15 K and the number 2.302585 is to convert the natural log 'ln' to base 10 log. So your equation should look something like E = E° - 0.05916/n log Q where n is the number of electrons in the reaction.