ON IMPEDANCE OF GALVANIC CELLS .28. FREQUENCY-DEPENDENCE OF ELECTRODE ADMITTANCE FOR SYSTEMS WITH FIRST-ORDER HOMOGENEOUS CHEMICAL REACTIONS AND REACTANT ADSORPTION OCCURRING SIMULTANEOUSLY

Equations are derived for the interfacial admittance of an electrode at which the electrode reaction O + ne ⇆R occurs assuming that the chargetransfer is infinitely fast and that either O or R is involved in a first-order homogeneous reaction delivering the substance Y, or the both O and R are involved in a catalytic reaction. If, moreover, adsorption of O and R or Y at the electrode surface is assumed, rather, more complicated expressions are obtained. A number of simpler limiting cases are treated in more details and it is concluded that in many practical cases the corresponding reduced equations describe the electrode admittance with sufficient precision. © 1969.