Effect of temperature on compressibility properties of 0.1, 0.5 and 1.0 molal solutions of alkali metal halides. Part 1. Aqueous solutions of sodium chloride, sodium bromide, sodium iodide, potassium chloride, potassium bromide, potassium iodide, rubidium chloride and rubidium iodide in the 278.15 K to 353.15 K temperature range

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2 Scopus citations

Abstract

Sound velocities in aqueous 0.1 mol·kg1, 0.5 mol·kg1 and 1.0 mol·kg1 solutions of NaCl, NaBr, NaI, KCl, KBr, KI, RbCl and RbI were measured at 1 K intervals from T = (278.15 to 353.15) K. Determined sound velocities and densities served to determine the isentropic and isothermal compressibility coefficients, the apparent molar compressibilities, the apparent molar volumes, the isochoric thermal pressure coefficients, cubic expansion coefficients, changes of heat capacities with volume and with pressure, and the hydration numbers. In addition were evaluated the ultrasonic relaxation times and corresponding thermodynamic functions of the activation of the viscous process. Determined parameters are qualitatively correlated with changes in the structure of water when alkali metal halides are dissolved in it.

Original languageEnglish
Pages (from-to)1263-1284
Number of pages22
JournalJournal of Molecular Liquids
Volume242
DOIs
StatePublished - 1 Sep 2017

Keywords

  • Alkali metal halides
  • Apparent molar compressibilities and apparent molar volumes
  • Changes of in heat capacities with volume and pressure
  • Cubic expansion coefficients
  • Densities
  • Isochoric thermal pressure coefficients
  • Isothermal and isentropic compressibilities
  • Sound velocities
  • Structure of aqueous solutions of alkali metal halides
  • Thermodynamic functions of the activation of the viscous process

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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