Speed of Sound, Density, and Related Thermodynamic Excess Properties of Binary Mixtures of Butan-2-one with C1–C4 n-Alkanols and Chloroform

Abstract

Densities and speeds of sound were measured for binary mixtures of butan-2-one with methanol, propan-1-ol, butan-1-ol, and chloroform at temperatures of 293.15–323.15 K and at atmospheric pressure, with the uncertainties of 0.05 kg·m–3 and 0.5 m·s–1, respectively. The molar excesses of volume, isentropic compression, and thermal expansion were calculated for those systems from the measured speeds and densities and for the mixture of butan-2-one with ethanol from the data reported in the literature. The negative excess volumes for the mixtures with alcohols decrease with the elongation of the hydrocarbon chain, and they eventually become positive for propan-1-ol and butan-1-ol at higher temperatures. That probably reflects the vanishing difference in size of the molecules in the mixture. The excess volume of butan-2-one + chloroform is close to that of butan-2-one + methanol. The excess expansion of butan-2-one + chloroform is negative, and it is positive for butan-2-one + alcohols, while the excess compression isotherms are approximately mirror images of those of the excess expansion. That results probably from the counteracting effects of temperature and pressure on the aggregation due to hydrogen bonds.

Positive and Negative Contributions in the Solvation Enthalpy due to Specific Interactions in Binary Mixtures of C1–C4 n-Alkanols and Chloroform with Butan-2-one

“…In the previous paper, 1 we explained the excess volumes of the systems (methanol, ethanol, propan-1-ol, butan-1-ol) + butan-2-one by differences in size of the molecules of the alcohols and butan-2-one. That idea is indirectly supported by the lack of convincing correlations between the limiting excess partial volumes (cf.…”

Thermodynamic, Ultrasonic, and Transport Study of Binary Mixtures Containing 2-(2-Methoxyethoxy)ethanol and Alcohols at (293.15–323.15) K

“…No further purification was attempted owing to their high-purity grade, which was more than 0.99 mass fraction. 1415.5 12 1.4233 1.01501 9 1417.1 14 1.4243 1.01670 11 1415.98 16 1.0164 17 1.01539 18 1.0154 13 1.01591 19 1.0164 20 1.01487 21 1.0164 12 1.01591 15 1.0164 14 1.01445 16 31 1108 32 1.3264 0.7867 34 1102 28 1.3267 0.7866 23 1102.81 35 1.3275 0.786671 36 1.32645 28 0.78686 37 1.32645 38 0.7863 39 1.3266 0.78666 41 31 1152 32 1.3593 33 0.7858 23 1142 28 1.3593 25 0.785339 36 1.3608 32 0.78540 37 1.35922 28 0.7849 39 1.35922 38 0.78497 41 1.3593 49 0.7850 42 1.3597 1223.22 27 1.3850 25 0.8036 52 1223 28 1.38494 28 0.8033 25 1.385 53 0.8034 28 1.3852 41 1216 32 1.3838 33 0.7995 30 1206 28 1.3832 25 0.800 51 1205.64 35 1.3848 32 0.7996 52 1205.69 56 1.38307 28 0.79961 3...…”

Analysis of thermophysical properties of binary systems containing ethyl acetate and 1-propanol or 1-butanol

“…The lines are a guide to the eye. [101], () [102], () [103], () [104], () [105], () [46], () [47], () [48], () [106], () [107], () [59], () [63], () [108], () [109], () [64], () [69], () [110], () [111], () [112], () [73], () [75], () [113], () [77], () [78], () [114], () [80], () [82], () [85], () [115], () [86], () [116], () [117], () [118], () [119], () [120], () [121], () [90], () [91], () [122], () [123], () [124], () [125], () [126], () [127], () [128], () [129], () [100], () [130]. The lines are a guide...…”