Spectrophotometric evaluation of acidity constants of two-step overlapping equilibria with application to the isonicotinic acid system

Numerical and graphical methods applicable to the Spectrophotometric evaluation of acidity constants of two-step overlapping equilibria in which the absorbance versus pH graphs have a maximum or minimum value are reported in this paper. In order to examine the applicability of the methods described,...

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Bibliographic Details
Published in:Microchemical journal 1987, Vol.35 (2), p.206-217
Main Authors: Asuero, A.G., Navas, M.J., Jiménez, A.M., Recamales, A.F.
Format: Article
Language:English
Subjects:
Catalysis
Catalysts: preparations and properties
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
General. Nomenclature, chemical documentation, computer chemistry
Theory of reactions, general kinetics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Numerical and graphical methods applicable to the Spectrophotometric evaluation of acidity constants of two-step overlapping equilibria in which the absorbance versus pH graphs have a maximum or minimum value are reported in this paper. In order to examine the applicability of the methods described, they have been applied to the isonicotinic acid system in aqueous medium at 20 °C with 0. l M ionic strength.
ISSN:0026-265X
1095-9149
DOI:10.1016/0026-265X(87)90076-2