Electrode Reaction Stoichiometries and Faradays Law

Electrochemical reactions are heterogeneous reactions characterized by at least one electron charge-transfer step. The electron e appears thus in the reaction equation with its stoichiometric coefficient n. The anodic oxidation of a reagent A to form the product B can be written as 

The relations established in the following are developed on the example of Equation (17.1) for the anodic half-cell reaction or Equation (17.3) for the overall cell reaction. 

The electric charge required to convert 1 mol of reagent in a reaction involving n electrons per mole is given by Earaday s law of electrolysis  

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