A Reproducible and Stable Silver-Silver Oxide Electrode

Abstract

A method is described for the preparation of silver‐silver oxide electrodes which are stable and reproducible. When used in cells of the type , , the silver‐silver oxide electrodes give stable potentials over periods of 38 days. No evidence was found that Ag, electrodes evolve oxygen, that exists in different forms in aqueous solutions at normal temperatures, that reverts to a lower oxide, or that imperfections exist in the crystal. The free energy and entropy changes for the reaction in the above cell are −11254 cal. and −9.12 e.u., respectively, at 25°C. These values are reasonably consistent with the best available thermodynamic data. The standard electrode potential of the Ag, electrode is found to be −0.342 v at 25°C.