Free accessResearch articleFirst published online 2003-5
Determination of all pK a Values of Some di- and Tri-Carboxylic Unsaturated and Epoxy Acids and Their Polylinear Correlation with the Carboxylic Group Atomic Charges
For a series of seven unsaturated and seven epoxy di- and tricarboxylic acids, pKaa values were determined potentiometrically in aqueous media at 25 °C and an ionic strength of 0.1 M (NaCl). The thermodynamic pKaa values were correlated with the atomic charges of carboxylic group calculated by the MNDO-PM3 semiempirical MO method.