Definitions for "Standard electrode potential"
Standard electrode potential (°) (standard reduction potentialis) are defined by measuring the potential relative to a standard hydrogen electrode using 1 mol solution at 25 °C. The convention is to designate the cell so that the oxidized form is written first. For example, Pt(s)|H2(g)H+(aq)|Zn2+(aq)|Zn(s) The e.m.f. of this cell is -0.76 V and the standard electrode potential of the Zn2+|Zn half cell is -0.76 V.
The reversible or equilibrium potential of an electrode in an environment where reactants and products are at unit activity.
The potential of a half-cell when all reactants are present in their standard states relative to the standard hydrogen electrode Normally, standard electrode potentials are for reduction reactions