An aqueous solution of bismuth nitrate (bi(no3)3) was electrolyzed until 35 grammes of metallic bismuth was plated out at the cathode, requiring 0.5023 faradays of power to have travelled through the cell.
Moles of Bi are equal to mass/molar mass, which is 35/209 = 0.167 mol.
Electrons per mole of bivalent ion = 3 * 0.167 = 0.5023 mol
1 mol of electrons has a charge of 1 F.
Charge equals 0.5023 moles per f.
The faraday is a dimensionless measure of the amount of electric charge, or roughly 6.02 x 1023 electric charge carriers. This is also referred to as Avogadro's constant and is equivalent to one mole for aqueous solution.
The coulomb (C) is the most popular unit for measuring the amount of electric charge in the International System of Units (SI). It is about similar to 6.24 × 1018 electric charge carriers and equal to one ampere-second (1 A s).
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