Densities, excess molar volumes, speeds of sound and isothermal compressibilities for {2-(2-hexyloxyethoxy)ethanol+n-alkanol} systems at temperatures between (288.15 and 308.15)K

Excess parameter studies on the binary mixtures of toluene with ketones at different temperatures

“…These trends further support the excess parameter studies for the binary mixtures reported in this work and also the excess volumetric and deviation in viscosity studies reported recently [5]. Similar negative values accounting for strong specific interactions between unlike molecules have been reported for (N-acetylmorpholine + aromatic hydrocarbons) [37] and (N,N-diethyl formamide + xylenes) [40] , and K E /;1 and K E /;2 are nearly the same in magnitude for both the components in each mixture and exhibit similar trends. The magnitude of K E m;1 ; K E m;2 ; K E /;1 , and K E /;2 for these mixtures follows the order: AC < EMK < AP, which indicates the order of interactions between toluene and ketone molecules in the order: AC > EMK > AP.…”

“…Using the values of partial molar properties, Y m;1 and Y m;2 at infinite dilution obtained from equations (6)-(9), the excess partial molar properties, Y E m;1 and Y E m;2 at infinite dilution are calculated by using equations (10) and (11) Furthermore, the partial molar volume and compressibility at infinite dilution have also been calculated by using another approach, which utilizes the apparent molar properties, Y /;1 and Y /;2 of the two components of the mixture, calculated by using the following relations [37][38][39] …”

Densities and volumetric properties of (N-acetylmorpholine+aromatic hydrocarbon) binary mixtures from T=(293.15 to 343.15)K

“…The excess thermal expansion coefficient a E was calculated as The presence of three methyl groups in mesitylene leads to expansion and preventing the molecular interactions between mesitylene and NAM at composition x 1 6 0.8, but as the concentration of mesitylene increases x 1 P 0.8, a E turns to negative due to the charge transfer complex formation between the components of the mixture. The apparent molar volumes Vu 1 and Vu 2 of the aromatic hydrocarbon in NAM and of NAM in aromatic hydrocarbon, respectively, at each investigated temperature were evaluated by using the following equations [12] The apparent molar volumes of each component liquid calculated from the experimental excess molar volumes and corresponding mole fraction by using equations (6) The partial molar volumes at infinite dilution in the binary mixtures were calculated over the whole mole fraction range by using the following equations [13]:…”

Volumetric and Acoustic Properties for Binary Mixtures of Dipropylene Glycol Monopropyl Ether with Alkylamines at Temperatures Between 288.15 K and 308.15 K

“…As a part of our ongoing program of research on thermodynamic and acoustic properties of binary liquid mixtures containing alkoxyethanols or alkoxypropanols, we have recently reported measurements of excess molar volumes, viscosities, and speeds of sound of binary mixtures of alkoxyalkanols with n-alkylamines [7][8][9][10], 1-alkanols [11][12][13][14][15][16], or amides [17]. As a part of this continuing work, the experimental results for the densities, ρ, and speeds of sound, u, are reported in this article for the binary systems of dipropylene glycol monopropyl ether (DPGMPE) with n-butylamine, dibutylamine, and tributylamine over the complete composition range and those of the pure liquid components at atmospheric pressure and temperatures of (288.…”