Mixed potential theory
Encyclopedia
Mixed potential theory is a theory used in electrochemistry
that relates the potential
s and currents from differing constituents to come up with a 'weighted' potential at zero net current. In other words, it is an electrode potential resulting from a simultaneous action of more than a single redox couple, while the net electrode current is zero.
reference electrode, often the standard hydrogen electrode
) when appreciable fraction to the anodic or cathodic current arises from species of two or more different redox couples, but when the total current on the electrode is zero.
Electrochemistry
Electrochemistry is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor and an ionic conductor , and which involve electron transfer between the electrode and the electrolyte or species in solution.If a chemical reaction is...
that relates the potential
Potential
*In linguistics, the potential mood*The mathematical study of potentials is known as potential theory; it is the study of harmonic functions on manifolds...
s and currents from differing constituents to come up with a 'weighted' potential at zero net current. In other words, it is an electrode potential resulting from a simultaneous action of more than a single redox couple, while the net electrode current is zero.
IUPAC definition
According to the IUPAC definition, mixed potential is the potential of an electrode (against a suitablereference electrode, often the standard hydrogen electrode
Standard hydrogen electrode
The standard hydrogen electrode , is a redox electrode which forms the basis of the thermodynamic scale of oxidation-reduction potentials...
) when appreciable fraction to the anodic or cathodic current arises from species of two or more different redox couples, but when the total current on the electrode is zero.