Nernst Equation

Mar 29th, 2015
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The Nernst Equation enables the determination of cell potential under non-standard conditions. It relates the measured cell potential to the reaction quotient and allows the accurate determination of equilibrium constants.

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DefinitionIn electrochemistry, the Nernst equation is an equation that enables the determination of cellpotential under non-standard conditions. When the reaction quotient is equal to the equilibriumconstant of the reaction for a given temperature, i.e. when the concentration of species are at theirequilibrium values, the Nernst equation gives the equilibrium voltage of the half-cell (or the fullcell), which is zero; at equilibrium, Q=K, G=0, and therefore, E=0. It is named after the Germanphysical chemist who first formulated it, Walther Nernst.ExpressionThe Nernst Equation is deriv

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