Ultrasonic velocity measurements for the ternary mixtures chlorobenzene +n-hexane + linear aliphatic alkane (C₇–C₈) at 298.15 K

Abstract

The ultrasonic velocity of the ternary mixtures chlorobenzene þ n-hexane þ (n-heptane or n-octane) at 298.15 K and atmospheric pressure, has been measured over the whole concentration range. The corresponding change of isentropic compressibility was computed from the experimental data. The results were fitted by means of the Nagata equation, such parameters being gathered. The experimental ultrasonic velocities have been analyzed by theoretical procedures, an adequate agreement between the experimental and theoretical values both in magnitude and sign being obtained, despite the high nonideal trend of mixtures.

Ultrasonic and spectral studies on charge transfer complexes of anisole and certain aromatic amines

“…The solvent n-hexane used was spectral grade Aldrich sample. The purity of these chemicals was ascertained by comparing the measured densities and ultrasonic velocity (Table 1) at the investigated temperatures with the reported literature values [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. The liquid mixtures of required concentrations were prepared by weighing appropriate amounts of pure liquids and mixed in airtight stopper bottles to minimize evaporation losses.…”

Isentropic compressibilities of the mixture chlorobenzene + n-hexane + (n-heptane orn-octane) at 298.15 K

“…A phase splitting occurs in the chlorobenzene þ n-hexane mixtures when neither chlorobenzene nor n-hexane is the most abundant component. These facts are analysed in previously published works [8][9][10][11].…”

“…The sound velocity u, isentropic compressibility s , as well as the fitting parameters corresponding to the binary mixtures enclosed into the studied ternary mixture were gathered in earlier papers [8][9][10][11]. Changes of isentropic compressibility for the ternary mixtures at the considered temperatures, which are shown in Tables 2 and 3, were computed applying the following equation: [18]; c [19]; d [20].…”