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Faraday constant

The Faraday constant represents the amount of electric charge carried by one mole, or Avogadro's number, of electrons. It is an important constant in chemistry, physics, and electronics and is commonly symbolized by the italic uppercase letter F. It is expressed in coulombs per mole (C/mol).

Faraday's constant can be derived by dividing the Avogadro constant, or the number of electrons per mole, by the number of electrons per coulomb. The former is equal to approximately 6.02 x 10 23, and the latter is approximately 6.24 x 10 18. Therefore:

F = (6.02 x 10 23 ) / (6.24 x 10 18 )

= 9.65 x 10 4 C/mol

This calculation is accurate to three significant figures.

Both the faraday and the farad are named for Michael Faraday, one of the independent inventors of the electric motor in the early 1800s.

See also: Table of physical constants.

This was last updated in January 2015

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