PVT Properties of Concentrated Aqueous Electrolytes. 7. The Volumes of Mixing of the Reciprocal Salt Pairs KCI, K2S04, NaCI, and Na2S04 at 25 °C and I = 1.5 m

Frank J. Millero, Sara Sotolongo

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The densities of mixtures of the six possible combinations of the salts KCI, NaCI, K2SO4, and Na2SO4have been determined at constant ionic strength (I = 1.5 m) and 25 °C. The results have been used to determine the volume of mixing (AVm) for these salts. The values of AVm have been fit to equations of the form AVm = + y2y312[v0 - 2y3)] where y{ is the Ionic strength fraction of salt l, and v0and v1are parameters related to the interaction of like charged ions. The cross-square rule was found to hold within the experimental error of the measurements.

Original languageEnglish (US)
Pages (from-to)470-472
Number of pages3
JournalJournal of Chemical and Engineering Data
Issue number4
StatePublished - Jan 1 1986


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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