Journal article
Ionization of water in concentrated potassium halide media
Australian Journal of Chemistry, Vol.53(5), pp.369-373
2000
Abstract
The ionic product of water, pKw = -log[H+][OH-], has been determined as a function of ionic strength (7) in concentrated aqueous solutions of KCl, KBr and Kl at 25°C by high-precision glass electrode potentiometric titrations. The pKw values obtained are in excellent agreement with, but generally more precise than, literature data. At I > 1 M the pKw values increase smoothly and show systematic differences in the order KCl < KBr < Kl, consistent with the decreasing H+-acceptor ability of the medium anions. Analogous behaviour is observed in MCl solutions, with pKw values varying in the order NaCl < KCl < CsCl. Formation constants of MOH0 ion pairs derived from these data are consistent with literature values.
Details
- Title
- Ionization of water in concentrated potassium halide media
- Authors/Creators
- F.K. Samani (Author/Creator)S.G. Capewell (Author/Creator)P. Sipos (Author/Creator)P.M. May (Author/Creator)G. Hefter (Author/Creator)
- Publication Details
- Australian Journal of Chemistry, Vol.53(5), pp.369-373
- Publisher
- Commonwealth Scientific and Industrial Research Organization Publishing
- Identifiers
- 991005543418207891
- Copyright
- © CSIRO 2000.
- Murdoch Affiliation
- School of Chemical and Mathematical Science
- Language
- English
- Resource Type
- Journal article
Metrics
91 Record Views