Ultrasonic studies for binary mixtures with trichloroethylene plus alkan-1-ols (C-3-C-8) at 303.15 K

Sound velocity for trichloroethylene + propan-1-ol, + butan-1-ol, + pentan- 1-ol, + hexan-1-ol, + heptan-1-ol, and + octan-1-ol have been measured at 3 03.15 K. These results have been combined with our previous results for exc ess molar volumes converted to densities to obtain isentropic compressibili ties, k(s). Deviations in the isentropic compressibility properties, Delta k(s), were evaluated using volume fraction weighing of the individual compo nent properties to estimate ideal mixture behavior. The Delta k(a) values a re negative over the whole range of volume fraction for all the mixtures an d at the minimum decreases with an increase in chain length of the alcohol. For all systems, these results were satisfactorily correlated by the Redli ch-Kister polynomial. The results are explained in terms of dissociation of the self-associated alkan-1-ol molecules and the formation of aggregates b etween unlike molecules through Cl ... H ... O bonding.