Values of the dissociation constants pKHA of a number of monosubstituted maleamic acids were determined potentiometrically using the glass electrode and spectrometrically in various mole fractions of ethanol - and dioxane - water mixtures. The resulting Hammett plots of pKHA Vs s were found linear in these solvent mixtures. The same pHA values - 0.61 ± 0.1 were found in the same solvent mixtures.
B N BARSOUM ,A M KHALIFA ,
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