Aqueous Acid-Base Equilibria and Titrations

Paperback | November 4, 1999

byRobert de Levie

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This book will give students a thorough grounding in pH and associated equilibria, material absolutely fundamental to the understanding of many aspects of chemistry. It is, in addition, a fresh and modern approach to a topic all too often taught in an out-moded way. This book uses newtheoretical developments which have led to more generalized approaches to equilibrium problems; these approaches are often simpler than the approximations which they replace. Acid-base problems are readily addressed in terms of the proton condition, a convenient amalgam of the mass and charge constraints of the chemical system considered. The graphical approach of Bjerrum, Hagg, and Sillen is used to illustrate the orders of magnitude of the concentrations of the variousspecies involved in chemical equilibria. Based on these concentrations, the proton condition can usually be simplified, often leading directly to the value of the pH. In the description of acid-base titrations a general master equation is developed. It provides a continuous and complete description of the entire titration curve, which can then be used for computer-based comparison with experimental data. Graphical estimates of the steepness of titration curvesare also developed, from which the practicality of a given titration can be anticipated. Activity effects are described in detail, including their effect on titration curves. The discussion emphasizes the distinction between equilibrium constants and electrometric pH measurements, which are subject to activity corrections, and balance equations and spectroscopic pH measurements, whichare not. Finally, an entire chapter is devoted to what the pH meter measures, and to the experimental and theoretical uncertainties involved.

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This book will give students a thorough grounding in pH and associated equilibria, material absolutely fundamental to the understanding of many aspects of chemistry. It is, in addition, a fresh and modern approach to a topic all too often taught in an out-moded way. This book uses newtheoretical developments which have led to more gene...

Prof Robert de Levie, Georgetown University, Department of Chemistry, Box 571227, Washington DC 20057-1227, USA fax 202 687 6209 From July 1 1999: Chemistry Department, Bowdoin College, Brunswick ME04011, USA

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Format:PaperbackPublished:November 4, 1999Publisher:Oxford University PressLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0198506171

ISBN - 13:9780198506171

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Table of Contents

Basic conceptsNumerical solutionsTitrationsBuffersOther ionic equilibriaActivity effectsThe measurement of pH, and its interpretationSummaryBibliographyIndex