Theory of a.c. voltammetry at a rotating disk electrode: Part III. Redox-electrode reactions coupled with first-order chemical reactions

A theory of a.c. voltammetry at a rotating disk electrode is developed for systems with coupled first-order chemical reactions. A general expression for a.c. waves, together with that for d.c. waves, is derived. It is shown that the effect of hydrodynamics on the phase angle is negligible under the condition of p≤0.35, where p is a parameter defined by the frequency of of a.c. wave, the rotation speed of the electrode and Schmidt number.