Ultrasonic absorption in binary liquid mixtures of 2-methyl-1-propanol with hexane at 293.15 K
University of Silesia, Institute of Chemistry, Szkolna 9, 40-006 Katowice, Poland
2 Central Mining Institute, Department of Environmental Monitoring, Gwarków 1, 40-166 Katowice, Poland
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The ultrasonic absorption coefficients in binary mixtures of 2-methyl-1-propanol with hexane were measured within the frequency range from 10 to 80 MHz in the whole concentration range at 293.15 K. The results of the measurements in connection with literature data were used to calculate classical ultrasound absorption expressed as, αcl/f2, and some related properties, i.e. difference between experimental and classical absorption, Δ α/f2, and the ratio α/αcl for the pure components. They were also used for finding out the values of volume viscosity, ηV, which cannot be measured directly. The composition dependences of ultrasonic absorption were discussed in terms of the gradual breakage of alcohol oligomers and entropy effects connected with structural changes of non-polar solvent resulting in displacement of the solvate equilibrium.
© EDP Sciences, Springer-Verlag, 2008