Question

What is the charge on an individual electron, if one $F$ is equivalent to $96,487$ $C/mole$?

• A. $5.76\times {10}^{28}C/e^{-}$
• B. $6.022\times {10}^{23}C/e^{-}$
• C. $1.6\times {10}^{19}C/e^{-}$
• D. $1.6\times {10}^{-19}C/e^{-}$

Answer 1

The correct option is D $1.6\times {10}^{-19}C/e^{-}$

The Faraday constant, denoted by the symbol F and named after Michael Faraday, is the magnitude of electric charge per mole of electrons.
It has the currently accepted value = $96487C/mole$.
The constant F has a simple relation to two other physical constants:
$F=e.N_A$
where
$e\approx 1.6021766\times {10}^{-19}C$
$N_A=6.022\times {10}^{23}mo{l}^{-1}$
$N_A$ is the Avogadro constant (the ratio of the number of particles, N, which is unitless, to the amount of substance, n, in units of moles), 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.