An important application of the Faraday constant

In 1909, Jean Perrin discovered the Avogadro constant and its relationship with the gram-molecule. In that same year, Robert Millikan, an American Physicist, conducted the now famous oil drop experiment and determined the charge for a single electron, q = 1.5924 x 10-19(about 0.6% off the currently accepted value). Dividing the Faraday constant, F, by q, we get the Avogadro constant:

\frac{96485}{1.5924\times 10^{-19}}=6.05\times 10^{23}

Therefore, one Faraday (units of charge per mole) is the total charge for one gram-molecule (or mole) of electrons:



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