How is the avagadros constant derived? [closed]








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İ heard that : 
Charge of a mole of electrons/charge of single electron =avagadros constant 
How is this derived ? 




The key is to determine the charge of a *mole* of electrons vs the charge of *one* electron.


We get the charge of one electron from the [Milliken oil drop experiment](https://en.wikipedia.org/wiki/Oil_drop_experiment).


For a mole of electrons you can start uf you firzt get the molar mass of water, call this $18.016$ grams per mole. Now electrolyze water with an inert electrolyte such as sodium sulfate. Work out the charge transfer required to decompose one mole = $18.016$ grams. This is two moles of electrons based on the stoichiometry of the electrochemical reaction. Half of this divided by the single electron charge is Avogadro's number.


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I believe it is the number of carbon atoms in 12 grams.


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