Alternating current polarography of organic compounds

In previous papers of this series (Breyer, Bauer, and Hacobian 1954 ; Breyer and Bauer 1956) it was shown that the A.C. polarographic behaviour of organic com- pounds can be explained by postulating adsorption of the substances at the electrode. Empirical and theoretical expressions for the dependence of the alternating current on the bulk concentration of depolarizer were qualitatively correlated. In the present paper, the theoretical treatment is developed further, permitting the evaluation of the adsorption coefficients of the oxidized and reduced forms at the electrode surface.