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.

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Bibliographic Details
Published in:Talanta (Oxford) 1986-11, Vol.33 (11), p.929-934
Main Authors: Asuero, A.G., Jimenez-Trillo, J.L., Navas, M.J.
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Solubility
Solution properties
Solutions
Solvation. Solvent properties
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Description
Summary: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.
ISSN:0039-9140
1873-3573
DOI:10.1016/0039-9140(86)80228-4