The construction and use of potential–pH diagrams in organic oxidation–reduction reactions

Potential–pH diagrams were constructed from literature data for phenol, 2,4,6-tri-t-butylphenol, and hydroquinone (1,4-dihydroxybenzene). The relationship between chemical and electrochemical phenomena is described, and the significance of the results of chemical experiments discussed in relation to the potential–pH diagrams for the case of phenol oxidations.