Quantitative Relations in Electrolysis

In 1832 and 1833 Michael Faraday reported his discovery by experiment of the fundamental laws of electrolysis. These are [Pg.362]

The mass of a substance produced by a cathode or anode reaction in electrolysis is directly proportional to the quantity of electricity passed through the cell. [Pg.362]

The masses of different substances produced by the same quantity of electricity are proportional to the equivalent masses of the substances. [Pg.362]

These laws are now known to be the result of the fact that electricity is composed of individual particles, the electrons. Quantity of electricity can be expressed as number of electrons the number of molecules of a substance produced by an electrode reaction is related in a simple way to the number of electrons involved hence the amount of substance produced [Pg.362]

The amounts of substances produced by a given quantity of current can be calculated from knowledge of the electrode reactions. The magnitude of the charge of one mole of electrons is 96,490 coulombs. This is called afaraday 1 F = 1 faraday = 96,490 C. [Pg.363]

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