Reactivity of an electrochemical reaction

The classic definition of reactivity can be apphed to an electrochemical reaction and we can therefore write it considering the number of electrons due constrmed between instants t and t +At. The interface area being bi-dimensional, we often use the sitrface reactivity. We have  

Convention 11.1.- In electrocheinistiy, intensities corresponding to an oxidation are counted positively, and those corresponding to a reduction are counted negatively. 

If v is taken as an absolute value and f denotes the Faraday, the reactivities of oxidation and reduction will be  

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Among the various parameters that may affect the reactivity of an electrochemical reaction (the current density), one of the most important is the potential e at the electrode, which is ultimately the difference at the equilibrium. 

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