The response curves for common electroanalytical methods

We will now discuss how the relationship between potential, mass transport and current manifests itself experimentally in some situations typically met in electroanalytical chemistry. In Sections 6.7.1-6.7.3, we discuss the response curves for two families of electroanalytical methods that are conducted under conditions where linear semi-infinite diffusion to/from planar working electrodes prevail. These are chronoamperometry and double 

The discussions will be based on a reduction process, Equation 6.6 reproduced below, studied under the conditions where the substrate O is the only electroactive species initially present in the solution and we will initially assume that the product of the electrode process, R, is stable under the conditions of the experiment. (The transposition to oxidation processes is straightforward. Be aware, however, that the minus and plus signs in some of the equations given below will then have to be interchanged.) This is followed by a discussion of how follow-up reactions involving R affect the response curves. 

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