Self-Supported Reduction of the Cobaltocenium Cation

9 Self-Supported Reduction of the Cobaltocenium Cation Problem 

ZiCi = 0 for all species i in a system, determine the steady-state ohmic drop as a function of overpotential for the reduction of a cobaltocenium salt (AX where A is cobaltocenium and X is its counter-ion) at a hemispherical electrode in the absence of any supporting electrolyte. Assume that all ions have equal diffusion coefficients. The relevant reaction is 

The potential difference applied, however, is the potential difference to bulk solution, measured versus a reference potential difference  

So long as the solution is well supported, an alteration to E produces an equivalent alteration to (0m - 0s,bulk)- If there is a significant potential difference between the plane of electron transfer and bulk solution, however, then  

We need to solve a set of steady-state Nernst-Planck equations  

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