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  2. Electrode potential - Wikipedia

    en.wikipedia.org/wiki/Electrode_potential

    To avoid possible ambiguities, the electrode potential thus defined can also be referred to as Gibbs–Stockholm electrode potential. In both conventions, the standard hydrogen electrode is defined to have a potential of 0 V. Both conventions also agree on the sign of E for a half-cell reaction when it is written as a reduction.

  3. Standard electrode potential (data page) - Wikipedia

    en.wikipedia.org/wiki/Standard_electrode...

    The data below tabulates standard electrode potentials (E°), 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/L for each aqueous or amalgamated (mercury-alloyed) species;

  4. Standard electrode potential - Wikipedia

    en.wikipedia.org/wiki/Standard_electrode_potential

    However, the potential of a reference electrode, standard hydrogen electrode (SHE), is defined as to 0.00 V. An electrode with unknown electrode potential can be paired with either the standard hydrogen electrode, or another electrode whose potential has already been measured, to determine its "absolute" potential.

  5. Standard hydrogen electrode - Wikipedia

    en.wikipedia.org/wiki/Standard_hydrogen_electrode

    Its absolute electrode potential is estimated to be 4.44 ± 0.02 V [1] at 25 °C, but to form a basis for comparison with all other electrochemical reactions, hydrogen's standard electrode potential (E°) is declared to be zero volts at any temperature. [2]

  6. Silver chloride electrode - Wikipedia

    en.wikipedia.org/wiki/Silver_chloride_electrode

    The standard electrode potential E 0 against standard hydrogen electrode (SHE) is 0.230 V ± 10 mV. [citation needed] The potential is however very sensitive to traces of bromide ions which make it more negative. The more exact standard potential given by an IUPAC review paper is +0.22249 V, with a standard deviation of 0.13 mV at 25 °C. [2]

  7. Table of standard reduction potentials for half-reactions ...

    en.wikipedia.org/wiki/Table_of_standard...

    The formal potential is thus the reversible potential of an electrode at equilibrium immersed in a solution where reactants and products are at unit concentration. [4] If any small incremental change of potential causes a change in the direction of the reaction, i.e. from reduction to oxidation or vice versa , the system is close to equilibrium ...

  8. Absolute electrode potential - Wikipedia

    en.wikipedia.org/wiki/Absolute_electrode_potential

    Absolute electrode potential, in electrochemistry, according to an IUPAC definition, [1] is the electrode potential of a metal measured with respect to a universal reference system (without any additional metal–solution interface).

  9. Reference electrode - Wikipedia

    en.wikipedia.org/wiki/Reference_electrode

    A reference electrode is an electrode that has a stable and well-known electrode potential. ... the potential for the Fc 0/+ couple is sensitive to solvent. [6] [7 ...