Rate Laws for Outer-Sphere Electron Exchanges

1 RATE LAWS FOR OUTER-SPHERE ELECTRON EXCHANGES 

Electron transfers are another prototype of chemical reactions as paradigmatic as H-atom or proton-transfer reactions. Furthermore, these are chemical processes ubiquitous in chemistry and biology. They are important from a historical point of view in the development of chemical kinetics, and are scientifically relevant in many physical, chanical, biological and technological processes. 

Let us consider the isothermal process for the transfer of one electron between hydrated iron (II) and (III) species 

This is a self-exchange reaction, where the products are identical to the reactants. For it to be followed experimentally, the iron species normally are marked radioactively (represented by ). If the reaction is followed, for example, in terms of Fe aJ, the rate law can be written as  

The result requires knowledge of the value of the standard integral 

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Rate Laws for Outer-Sphere Electron Exchanges... 

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