Question 7.1: What is the charge on 1 mol of electrons?...

The charge e on a single electron is 1.6 × 10^{−19} C and there are 6.022 × 10^{23} electrons per mole (the Avogadro number L), so the charge on a mole of electrons is given by the simple expression

charge on one electron = L ×e              (7.6)

Inserting numbers into Equation (7.6), we obtain

charge on 1 mole of electrons

=~1.6~\times~10^{−19}~C~\times~6.026~\times~10^{23}~mol^{−1}

We see that 1 mol has a charge of 96 487~Cmol^{−1}. This quantity of charge is known as the ‘Faraday’ F.