In electrochemistry, the Nernst equation is an equation which can be used (in conjunction with other information) to determine the equilibrium reduction potential of a half-cell in an electrochemical cell.
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corrections to the logarithm and is the potential that is actually measured in an electrochemical cell. ==Relation to equilibrium== We have thus related the standard electrode potential and the equilibrium constant of a redox reaction. ==Limitations== In dilute solutions, the Nernst equation can be expressed directly in terms of concentrations (si...
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(from the article `electrochemical reaction`) For a particular value of the two partial current densities must become equal. This value of potential is the reversible electrode potential. From ... ...form of the chemical species, Red is the reduced form, and is the number of electrons (e) transferred during the reaction, the potential...
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Corrects standard electrode potentials for nonstandard conditions.
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http://www.chemistry-dictionary.com/definition/nernst+equation.php
Corrects standard electrode potentials for nonstandard conditions.
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An equation that expresses the exact electromotive force of a cell in terms of the activities of products and reactants of the cell.
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<physics> A basic equation of biophysics that describes the relationship between the equilibrium potential difference across a semipermeable membrane and the equilibrium distribution of the ionic permeant species. ... It is described by: E = (RT/zF).ln[C1/C2 ... Where E is the potential on side 2 relative to side 1 in volts), R is the gas con...
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A basic equation of biophysics that describes the relationship between the equilibrium potential difference across a semipermeable membrane, and the equilibrium distribution of the ionic permeant species. It is described by: E = -(RT/zF).ln(C2/C1), where E is the potential on side 2 relative to side 1 (in volts), R is the gas constant (8.314 J K-1 mol-1 ), T is the absolute temperature, z is the charge on the permeant ion, F is the Faraday constant (96,500 C mol-1) and C1 and C2 are the concentrations (more correctly activities) of the ions on sides 1 and 2 of the membrane. It can be seen that this equation is a solution of the more general equation of electrochemical potential, for the special case of equilibrium. The equation described the voltage generated by ion-selective electrodes, like the laboratory pH electrode; and approximates the behaviour of the resting plasma membrane (see resting potential).
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Type: Term Pronunciation: nārnst Definitions: 1. the equation relating the equilibrium potential of electrodes to ion concentrations; the equation relating the electrical potential and concentration gradient of an ion across a permeable membrane at equilibrium: E = [RT / nF] [ln (C
1/C
2)], where E = po...
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Used by cell designers to calculate the voltage of a chemical cell from the standard electrode potentials, the temperature and to the concentrations of the reactants and products.
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A mathematical description of electrode behavior: E is the total potential, in millivolts, developed between the sensing and reference electrodes; Ex varies with the choice of electrodes, temperature, and pressure: 2.3RT/nF is the Nernst factor (R and F are constants, n is the charge on the ion, including sign, T is the temperature in degrees Kelvi...
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