Abstract
The importance of the knowledge of the equilibrium constants of the chemical reactions is considerable. They notably permit to know the position of the equilibrium according to the experimental conditions with a good accuracy, thanks to the use of the activities when the behaviors of reactants and products are not ideal.
The chapter mentions some determinations of thermodynamic equilibrium constants. They entail the use of activities. Here, very classical determinations by potentiometric and conductometric measurements are considered. Some examples are given. They are the potentiometric determinations of the mean activity coefficient of a strong acid, the thermodynamic acidity constant of a weak acid, the ionic product of water, and the conductometric measurement of an acidity constant. It is also devoted to the quantity named pH, the definition and measurement of which being intimately linked to the concept of activity.
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Burgot, JL. (2017). Obtention of Equilibrium Thermodynamic Constant pH: Definitions and Measurement. In: The Notion of Activity in Chemistry. Springer, Cham. https://doi.org/10.1007/978-3-319-46401-5_18
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DOI: https://doi.org/10.1007/978-3-319-46401-5_18
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Publisher Name: Springer, Cham
Print ISBN: 978-3-319-46399-5
Online ISBN: 978-3-319-46401-5
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