Volumes of aqueous alcohols, ethers, and ketones to T = 523 K and p = 28 M Pa

Mitchell D. Schulte, Everett L. Shock, Marek Obšil, Vladimir Majer

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Densities of dilute aqueous solutions of isopropanol, 1,5-pentanediol, cyclohexanol, benzyl alcohol, diethyl ether, 1,2-dimethoxyethane, acetone, and 2,5-hexanedione were measured by means of a vibrating-tube flow densimeter at temperatures near T = (302, 373, 423, 473, and 521) K at a pressure of p = 28 MPa At the lowest and highest temperatures, measurements were also made close to the saturation vapour pressure of water to investigate the effect of pressure on the volumes of solutes. Apparent molar volumes were calculated for each solute and extrapolated to give partial molar volumes at infinite dilution. The variation of the volume with temperature, pressure, and structure of solute is discussed qualitatively, and group contributions are determined at the temperatures of measurements and p = 28 MPa Several equations proposed in the literature for correlating the partial molar volumes at infini te dilution as a function of state parameters are tested. Parameters of one selected equation are tabulated allowing calculation of the partial molar volumes at infinite dilution at temperatures and pressures up to T = 573 K and p = 40 MPa, respectively.

Original languageEnglish (US)
Pages (from-to)1195-1229
Number of pages35
JournalJournal of Chemical Thermodynamics
Volume31
Issue number9
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

Keywords

  • Aqueous solution
  • Contribution method
  • Density
  • Organic compound
  • Partial molar volume
  • Temperature correlation
  • Vibrating tube

ASJC Scopus subject areas

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

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