Abstract:Discriminant for complete reaction in asymmetric redox reactions was deduced on the basis of Nernst equation, based on which a further exploration was made into the correlative factors that might affect the complete reaction of an asymmetric redox reaction. For a given reaction, the principal influences come from the conditional electromotive force and reactant concentrations; for reactions in which the particles of subjectival substance of the reaction decrease in number, the reactions are better conducted in high concentrations; otherwise, low concentrations are preferred.