For a reaction with a single rate-determining step \[\frac{\alpha _{\rm{c}}}{\nu } = -\frac{R\ T}{n\ F}\ (\frac{\partial (\ln (|I_{\rm{c}}|))}{\partial E})_{T,p,c_{i},...}\] where \(\alpha _{\rm{c}}\) is the cathodic transfer coefficient (number), \(R\) is the gas constant, \(T\) is the thermodynamic temperature, and \(\nu \) the stoichiometric number giving the number of identical activated complexes formed and destroyed in the completion of the overall reaction as formulated with the transfer of \(n\) electrons.