Calculation
Amount of the quantity of electricity passed through the cell can be easily calculated by mass changes of any of the electrodes:
- ,
where:
- Q is the quantity of electricity (coulombs)
- is the mass transported (gm)
- 63.546 is the atomic weight of copper (the factor 2 is due to the transport of divalent ions)
- F is the Faraday constant (96485.3383)
Although from a theoretical and historical point of view this apparatus is interesting, present day electronic measurement of time and electrical current provide in their multiplication the amount of passed coulombs much easier, with greater precission, and in a shorter period of time than is possible by weighing the electrodes.
Read more about this topic: Copper Coulometer
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