International Journal of Thermophysics

, Volume 31, Issue 1, pp 131–142 | Cite as

Comparative Studies of the Mixing Effect on the Thermal Effusivity, Compressibility, and Molar Volume for Aqueous Solutions of Alcohols

  • Anna SikorskaEmail author
  • Nikodem Ponikwicki
  • Agnieszka Koniecko
  • Bogumił B. Linde


Concentration dependences of the thermal effusivity, isentropic compressibility coefficient, and molar volume were investigated experimentally for aqueous solutions of ethanol, 1-propanol, and 2-propanol. The thermal effusivity was determined using a photoacoustic method. The excess molar volume was found from measured densities, while the isentropic compressibility coefficient was calculated based on density and ultrasound velocity measurements. It has been shown that the dependence of the effusivity on concentration, expressed in mass fraction units, is nonlinear in the case of all the alcohols used. Moreover, the location of extreme deviations from linearity for the thermal effusivity, Δe, agrees well with that of characteristic points for the isentropic compressibility coefficient, κ S , and the excess molar volume, \({V_{\rm m}^{\rm E}}\), as a function of the concentration.


Alcohols Aqueous solutions Isentropic compressibility coefficient Molar volume Photoacoustic Thermal effusivity 


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Anna Sikorska
    • 1
    Email author
  • Nikodem Ponikwicki
    • 1
  • Agnieszka Koniecko
    • 1
  • Bogumił B. Linde
    • 1
  1. 1.Institute of Experimental PhysicsUniversity of GdańskGdańskPoland

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