Vapor pressures and densities of nacl(aq) and kcl(aq) at the temperature 623 k and cacl 2 (aq) at the temperatures 623 k and 643 k

Rosa Crovetto, Serguei Lvov, Robert H. Wood

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

A new vibrating-tube densimeter, combined with a new detection method for determining phase transitions, was used to measure vapor pressures p and densities ρ at several pressures near saturation for aqueous solutions of NaCl, KCl, and CaCl 2 at molality m = (0.25, 0.5, 1, and 3) mol·kg -1 and temperature T = 623 K. CaCl 2 solutions were also measured at T = 643 K. The measured difference Δρ in density between pure water and the solution was used to calculate the density of the solution, the molar volume, and the average compressibility of the solution. The uncertainties of the measurements were: vapour pressure, ±0.004·p; Δρ = ±(0.0005+10 -4 Δp/MPa) g·cm -3 .

Original languageEnglish (US)
Pages (from-to)127-138
Number of pages12
JournalThe Journal of Chemical Thermodynamics
Volume25
Issue number1
DOIs
StatePublished - Jan 1 1993

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Physical and Theoretical Chemistry

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