A Bilogarithmic Hyperboline Sine Procedure for the Simultaneous Calculation of Successive Formation Constants of Two Step Overlapping Acid-Base Equilibria from Potentiometric Measurements
Julia Martin1*, Maria Jose Banez Morejon2, Agustin G. Asuero2
Citation : Julia Martin,et.al., A Bilogarithmic Hyperboline Sine Procedure for the Simultaneous Calculation of Successive Formation Constants of Two Step Overlapping Acid-Base Equilibria from Potentiometric MeasurementsInternational Journal of Advanced Research in Chemical Science 2018, 5(11) : 43-50.
In this paper we have developed a procedure for the potentiometric determination of acidity constants of simultaneous acid-base equilibria. The V-pH data are transformed into data n-pH, being n the Bjerrum index. The process of linearization involving the use of the hyperbolic sine function leads to a bilogarithmic expression. The procedure has been applied to the experimental data obtained by us in the laboratory for succinic acid, obtaining good results.