Estimation of the partial molal adiabatic compressibility of ions in mixed electrolyte solutions using the pitzer equations

Frank J. Millero, Jonathan D. Sharp

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The Pitzer equations have been used to fit the apparent molal adiabatic compressibility of electrolytes in water as a function of temperature. The equations have been used to estimate the partial molal compressibility for a number of cations and anions in 0.725 m NaCl and average seawater (S = 35 g kg-1). The calculated results for electrolytes are in good agreement with direct measurements in 0.725 m NaCl and seawater. The partial molal compressibilities estimated from the model can be used to make more reliable estimates of the effect of pressure on activity coefficients and ionic equilibria in seawater and other mixed electrolyte solutions at high pressures.

Original languageEnglish (US)
Pages (from-to)3458-3463
Number of pages6
JournalJournal of Chemical and Engineering Data
Volume58
Issue number12
DOIs
StatePublished - Dec 12 2013

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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