Abstract
Since the value of the formal potential of the chromate-chromic half-cell would be of considerable interest and since very few measurements of this potential were found in literature, an investigation of its determination was undertaken. The usual concept of formal potential is the potential value for a certain reaction when the concentration of the oxidized and reduced substances represents their total concentration including possible formation of complexes, incomplete ionization, hydrolysis effects, etc. It expresses the condition actually existing In the experiment. It was the purpose, therefore, .of this investigation to determine by means of electromotive force measurements the formal potential of the chromate-chromic system in the media, of various concentrations of sulfuric acid.