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Electrochemical series

Data values of standard electrode potentialThe data below tabulates standard electrode potentials (Ered), in volts relative to the standard hydrogen electrode (SHE), at: Temperature 298.15 K (25.00 °C; 77.00 °F);Effective concentration (activity) 1 mol/dm for each aqueous or amalgamated (mercury-alloyed) species;Unit activity for each solvent and pure solid or liquid species; andAbsolute partial pressure 101.325 kPa (1.00000 atm; 1.01325 bar) for each gaseous reagent — the convention in most literature data but not the current standard state (100 kPa (0.99 atm; 1.0 bar)).Variations from these ideal conditions affect measured voltage via the Nernst equation.

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