EXCESS ISENTROPIC COMPRESSIBILITIES OF HALOHYDROCARBON PLUS BUTANOL MIXTURE AT 298.15 K

Isentropic compressibilities, kappa(s), and excess isentropic compress ibilities, kappa(s)(E), of various halohydrocarbons, namely, chlorocyc lohexane, chlorobenzene, bromocyclohexane and bromobenzene in isomeric butanols were calculated from density and speed of sound measurements at 298.15 K. Excess isentropic compressibilities were fitted to the R edlich-Kister equation. Mixtures containing an aromatic halohydrocarbo ns show a decrease in the kappa(s)(E) values with respect to those con taining the corresponding halocycloalkane. The same effect can be obse rved when the chlorine atom is substituted by bromine.