Speeds of sound u of {xC2H5OC2H5+(1-x)C6H6} and {xC2H5OC2H5+(1-x)CCl4} have been measured at T=298.15 K. Values of u have been used to calculate the isentropic compressibilities kS for these mixtures. The values of the excess isentropic compressibilities k E S have also been calculated and are found
Excess thermodynamic properties of {xc-C6H10O+(1−x)(n-C7H16orc-C6H12)} atT=298.15 K
✍ Scribed by Koji Nishikawa; Katsutoshi Tamura; Sachio Murakami
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 229 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0021-9614
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✦ Synopsis
Densities of the mixtures 7 16 6 12
were also measured at temperatures 298.15 K and 308.15 K and their excess thermal expansive coefficients estimated. Molecular shapes of second components have significant effect on the excess properties. The thermal properties were similar to each other but volumetric properties were considerably different. Non-polar components break the dipolar interaction of ketones, but ketone molecules instantaneously reorient to more stable dipolar orientation. As a result, non-randomness was observed.
📜 SIMILAR VOLUMES
Speeds of sound, densities, refractive indices, and isentropic compressibilities, at the temperature \(298.15 \mathrm{~K}\) of \(\left\{x_{1} \mathrm{C}_{6} \mathrm{H}_{6}+x_{2} \mathrm{c}-\mathrm{C}_{6} \mathrm{H}_{12}+\left(1-x_{1}-x_{2}\right) \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{Cl}\right\}\) a
The excess molar volumes V E m , relative permittivity increments δε r , and excess molar polarization or C 7 H 8 , or o-C 8 H 10 , or m-C 8 H 10 , or p-C 8 H 10 , or C 8 H 10 , or c-C 6 H 12 )} have been measured at the temperatures 298.15 K and 308.15 K. The results for V E m , δε r , and P E m i
In this paper we report excess molar enthalpies H E m and excess molar volumes V E m of the polar solvents N -methyl-2-pyrrolidinone (C 5 H 9 NO), N ,N -dimethylformamide (C 3 H 7 NO), and dimethyl sulphoxide (C 2 H 6 SO) with 1-hexyne, or 1-heptyne, or 1octyne at T = 298.15 K. The H E m values are