Reference Electrode

A reference electrode is an electrode which has a stable and well-known electrode potential. The high stability of the electrode potential is usually reached by employing a redox system with constant (buffered or saturated) concentrations of each participants of the redox reaction.

There are many ways reference electrodes are used. The simplest is when the reference electrode is used as a half cell to build an electrochemical cell. This allows the potential of the other half cell to be determined. An accurate and practical method to measure an electrode's potential in isolation (absolute electrode potential) has yet to be developed.

Read more about Reference ElectrodeAqueous Reference Electrodes, Nonaqueous Reference Electrodes, Pseudo-reference Electrodes

Other articles related to "electrodes, electrode, reference electrode, reference electrodes, reference":

Negative P H - Definition and Measurement - PH
... solution This definition was adopted because ion-selective electrodes, which are used to measure pH, respond to activity ... Ideally, electrode potential, E, follows the Nernst equation, which, for the hydrogen ion can be written as where E is a measured potential, E0 is the standard electrode potential, R is the gas constant, T is the ... It follows that electrode potential is proportional to pH when pH is defined in terms of activity ...
Reference Electrode - Pseudo-reference Electrodes
... A pseudo-reference electrode is a term that is not well defined and borders on having multiple meanings since pseudo and quasi are often used interchangeably ... They are a class of electrodes named pseudo-reference electrodes because they do not maintain a constant potential but vary predictably with conditions ... known, the potential can be calculated and the electrode can be used as a reference ...
Silver Chloride Electrode
... A silver chloride electrode is a type of reference electrode, commonly used in electrochemical measurements ... For example, it is usually the internal reference electrode in pH meters ... As another example, the silver chloride electrode is the most commonly used reference electrode for testing cathodic protection corrosion control systems in sea water environments ...
Auxiliary Electrode
... The Auxiliary electrode, often also called the counter electrode, is an electrode used in a three electrode electrochemical cell for voltammetric analysis or other reactions in which an electrical ... The auxiliary electrode is distinct from the reference electrode, which establishes the electrical potential against which other potentials may be ... In a two-electrode system, either a known current or potential is applied between the working and auxiliary electrodes and the other variable may be measured ...
Bulk Electrolysis - Cell Design
... In most three electrode experiments there are two isolated cells ... One contains the auxiliary and working electrode, while the other contains the reference electrode ... Strictly speaking, the reference electrode does not require a separate compartment ...

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