Equilibrium vapor pressure of H2O above aqueous H2SO4 at low temperature

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Mario Massucci
  • Simon L. Clegg
  • Peter Brimblecombe

Detail(s)

Original languageEnglish
Pages (from-to)765-778
Journal / PublicationJournal of Chemical and Engineering Data
Volume41
Issue number4
Publication statusPublished - Jul 1996
Externally publishedYes

Abstract

Equilibrium partial pressures of water (p(H2O)) over solutions of (5.054 to 26.18) mol kg-1 H2SO4 from (314.2 to 196.5) K have been determined using capacitance manometers in order to (1) obtain data for compositions relevant to the stratospheric aerosol and (2) extend and test present knowledge of the thermodynamic properties of aqueous H2SO4 at low temperature. Current approaches to calculating p(H2O) from existing thermodynamic data are critically examined and compared to measurements made in this study and others in the literature. The reliability (to within about ±10% at the lowest temperatures) of predictions of p(H2O) using liquid phase thermodynamic properties determined by Giauque and co-workers is confirmed for solutions from 4.37 mol kg-1 to at least 25 mol kg-1.

Citation Format(s)

Equilibrium vapor pressure of H2O above aqueous H2SO4 at low temperature. / Massucci, Mario; Clegg, Simon L.; Brimblecombe, Peter.

In: Journal of Chemical and Engineering Data, Vol. 41, No. 4, 07.1996, p. 765-778.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review