Rayleigh and Brillouin Scattering in Several Binary Solutions : Derivation of Thermodynamic Quantities of Mixing

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概要

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• The Rayleigh and Brillouin scattering experiments have been carried out for the systems of benzene-primary alcohols C_nH_<2n+1>OH (n=1 to 5) and benzene-ethyl ether in order to make sure the applicability to the arguments on the thermodynamic quantities based on the density and concentration fluctuations proposed by Bhatia and Thornton. The effect of the difference in the molar volumes of the constituents is, in particular, emphasized for the obtained concentration-concentration fluctuation in the long wavelength limit, S_<cc>(0, c, T). A new method is also proposed to derive the Gibbs free energy of mixing ΔG, by using the data of S_<cc>(0, c, T). The obtained ΔG for benzene-ethyl ether is nearly equal to RT(clnc+(1-c)ln(1-c)) and those for benzene-pentanol, butanol and propanol are, more or less, similar to those of typical binary fluids. While, ΔG's of benzene-methanol and ethanol in their magnitudes show phase separation tendencies, which are also seen in the shapes of S_<cc>(0, c, T)'s.

• 社団法人日本物理学会の論文
• 1995-05-15

著者

• Kawase S

  Niigata Univ. Niigata

• Kawase Shun′i

  College of Biomedical Technology, Niigata University

関連論文

• Rayleigh and Brillouin Scattering in Several Binary Solutions : Derivation of Thermodynamic Quantities of Mixing

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