Mathematical treatment of absorbance versus pH graphs of polybasic acids.
Mathematical relationships determining the shape of absorbance vs. pH graphs of polybasic acids are derived, and new graphical and numerical techniques for evaluating the acidity constants of two-step overlapping equilibria are examined.
Asuero
A G
AG
Department of Bromatology, Toxicology, and Applied Chemical Analysis, Faculty of Pharmacy, The University of Seville, 41012 Seville, Spain.
Jimenez-Trillo
J L
JL
Navas
M J
MJ