Calculate the current obtained at a time of 2 s after the application of a potential for the oxidation of Cu" to Cu". The concentration of Cu was 5 mM, the diffusion coefficient was 5 x 10* cm'/s and the diameter of the gold disc electrode electrode 1.5 mm. Calculate the current obtained at a time of 2 s after the application of a potential for the oxidation of Cu" to Cu". The concentration of Cu was 5 mM, the diffusion coefficient was 5 x 10* cm'/s and the diameter of the gold disc electrode electrode 1.5 mm.