Thermodynamic properties of binary mixtures: Hexamethylphosphoric triamide (HMPA) with a non-polar liquid at 25�C
Autor: | Masato Fukumori, Katsutoshi Tamura, Yoshikane Kawasaki, Yoshimasa Akagi, Sachio Murakami |
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Rok vydání: | 1994 |
Předmět: | |
Zdroj: | Journal of Solution Chemistry. 23:989-996 |
ISSN: | 1572-8927 0095-9782 |
DOI: | 10.1007/bf00974099 |
Popis: | Excess isobaric heat capacities C p E , densities π and speeds of sound u of HMPA+heptane and+benzene were measured at 25°C. C p E of both mixtures were positive in the range of small x and negative in the other region. The mixture containing benzene showed higher C p E than the heptane mixture. They both exhibited considerably smaller C V E than C p E . VE was positive for HMPA+heptane and negative for HMPA+benzene. The compressibilities K s E and K p E of both mixtures were negative. In both mixtures, non-random mixing is expected and [(CH3)2N]3PO molecules are inhomogeneously distributed. |
Databáze: | OpenAIRE |
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