It is the potential developed when the pure metal is in contact with its ions at one molar concentration at a temperature of 25oC or 298 K. Example: When a Zn rod of any length is dipped in 1M ZnSO4 solution, standard electrode is formed and the potential developed is called standard zinc electrode potential (EoZn).
How electrode potential is determined?
It is measured with the help of a reference electrode known as the standard hydrogen electrode (abbreviated to SHE). The electrode potential of SHE is 0 Volts. The standard electrode potential of an electrode can be measured by pairing it with the SHE and measuring the cell potential of the resulting galvanic cell.
How is single electrode potential originated?
With an open-circuit, the metal electrode in each half-cell transfers its ions into solution. Thus an individual electrode develops a potential with respect to the solution. ... The amount of the charge produced on an individual electrode determines its single electrode potential.
