Article | REF: J1607 V1

Electrochemistry. Current-potential characteristics: theory (part 2)

Authors: Bernard TRÉMILLON, Gérard DURAND

Publication date: June 10, 2001

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1. Reduction of metal cations

In the case of an electrode consisting of the metal M (solid) conjugated to the metal ion M ^z+ reducible to M, a metal itself oxidizable to M ^z+ (M ^z+ + z e ^- = M¯), and if we're dealing with a fast system, we can apply the relationship (assuming that the chemical potential of M¯ is constant):

E = E ​^{\circ} + \frac{0,058}{z} lg {[M^{z +}]}^{*} = E_{eq} + \frac{0,058}{z} lg \frac{{[M^{z +}]}^{*}}{[M^{2 +}] ​^{°}}

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Influence of metal cation complexation or precipitation reagents

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