Faraday Constant

In physics and chemistry, the Faraday constant (named after Michael Faraday) is the magnitude of electric charge per mole of electrons. It has the currently accepted value

F = 96,485.3365(21) C/mol.

The constant F has a simple relation to two other physical constants:


e ≈ 1.6021766×10−19 C;
NA ≈ 6.022141×1023 mol−1.

NA is the Avogadro constant (the ratio of the number of particles 'N' to the amount of substance 'n' - a unit mole), and e is the elementary charge or the magnitude of the charge of an electron. This relation is true because the amount of charge of a mole of electrons is equal to the amount of charge in one electron multiplied by the number of electrons in a mole.

The value of F was first determined by weighing the amount of silver deposited in an electrochemical reaction in which a measured current was passed for a measured time, and using Faraday's law of electrolysis. Research is continuing into more accurate ways of determining the interrelated constants F, NA, and e.

Read more about Faraday Constant:  Other Common Units of Faraday's Constant, Faraday Unit of Charge

Other articles related to "constant, faraday constant, faraday, faradays":

Avogadro Constant - Measurement - Coulometry
... The earliest accurate method to measure the value of the Avogadro constant was based on coulometry ... The principle is to measure the Faraday constant, F, which is the electric charge carried by one mole of electrons, and to divide by the elementary charge, e, to obtain the Avogadro constant The classic ... the anode and Ar the atomic weight of silver, then the Faraday constant is given by The NIST scientists devised a method to compensate for silver lost from the anode ...
Planck Constant - Determination - Faraday Constant
... The Faraday constant F is the charge of one mole of electrons, equal to the Avogadro constant NA multiplied by the elementary charge e ... and converting from conventional electrical units to SI units, gives the relation to the Planck constant ...
Faraday Constant - Faraday Unit of Charge
... Related to Faraday's constant is the "faraday", a unit of electrical charge ... One Faraday of charge is the magnitude of the charge of one mole of electrons, i.e ... Expressed in faradays, the Faraday constant F equals "1 faraday of charge per mole" ...

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