Accurate calculation of equilibrium constants using potentiometric titrations

The aim of this work is to revise some programs, which are used to obtain accurate equilibrium constants using several chained programs. For this purpose, the AutoAnalysis software is very useful to perform the experimental work, including potentiometric titrations. The POTENtit program allows detecting some problems in the data obtained with AutoAnalysis along the experimental work, like the presence of metals in the sample and the carbonation of the titrant. This program also allows obtaining the standard potential of the working electrode, and the ionic product of the solvent under the used experimental ionic strength. Finally the MINIPOT program allows refining the results obtained, both for the calibration of the electrodes (E-0, j(H), J(OH), pK(s), and g) and for the constants equilibria (HqLp or MqLp). These three mentioned programs have been updated in order to run under the Windows 10 environment. (C) 2022 Elsevier B.V. All rights reserved.

Automated summary

This work aims to revise programs used to obtain accurate equilibrium constants through multiple chained programs. The AutoAnalysis software is valuable for conducting experimental work, including potentiometric titrations. The POTENtit program detects problems in the data obtained with AutoAnalysis during the experimental work, such as the presence of metals in the sample and carbonation of the titrant. It also provides the standard potential of the working electrode and the ionic product of the solvent under the experimental ionic strength. The MINIPOT program refines the results obtained, including electrode calibration and equilibrium constants. These three programs have been updated to run in the Windows 10 environment.