Electrochemical Equivalent
The mass of a substance liberated by the passage of one coulomb of charge.
Formula / equation
Z = M / (nF)
Unit
g/C
In depth
Equal to the equivalent weight divided by the Faraday constant, it is the proportionality factor in Faraday's first law. Because the values are small, they are often quoted in milligrams per coulomb, and they were once used to define the ampere by silver deposition.
Examples in the real world
Silver's electrochemical equivalent is 1.118 mg/C, the basis of the old international ampere.