title: Aqueous Acid-base Equilibria and Titrations
author: Robert de Levie
description: Prof Robert de Levie, Georgetown University, Department of Chemistry, Box 571227, Washington D.C. 20057-1227, U.S.A. fax 202 687 6209 From July 1 1999: Chemistry Department, Bowdoin College, Brunswick M.E.04011, U.S.A.
zlib_text: Heike Kahlert and Fritz ScholzAcid-Base
  Diagrams201310.1007/978-3-642-37902-4_1© Springer-Verlag Berlin Heidelberg
  2013
  
  # 1\. Introduction
  
  Heike Kahlert1  and Fritz Scholz1
  
  (1)
  
  Institute of Biochemistry, University of Greifswald, Greifswald, Germany
  
  Abstract
  
  Acid–base diagrams, better called pH-logc
  
  
  i diagrams, are the most beneficial tools which have been developed to
  describe acid–base equilibria. They present the interrelations between the
  logarithm of all equilibrium concentrations c of the species i and the pH
  value of the solution. They make it possible, without any math calculations,
  to find the approximate pH of solutions of acids and bases and buffers. They
  can be also applied to find out what approximations in the math calculations
  of the pH (or concentration of any species) are allowed under certain
  conditions. These acid–base diagrams can also be used to construct titration
  curves in order to extract the most important data, such as pH at the
  equilibrium point, etc.