Question

The purpose of this problem is to compare the limiting current for the electrorefining of Cu both with and without supporting electrolyte. Assume that copper is reduced at the left electrode (x=0) and oxidized at the right electrode (x=L). You should also assume steady state and no convection. Finally, assume that the current efficiency for both copper oxidation and reduction are 100%, (Note that the assumptions of no convection leads to very ow values of the limiting current since transport by diffusion is slow over the 5 cm gap.

1. Derive an expression for the limiting current in the presence of a supporting electrolyte

Answer 1