- 作者: --
- 作者服務機構: Department of Chemistry, Jamia Millia Islamia (Central University), Jamia Nagar, New Delhi - 110 025, India
- 中文摘要: The densities, ρ, and ultrasonic speeds, u, have been measured in the binary liquid mixtures of acetonitrile (CAN) with 1-hexanol, 1-octanol and 1-decanol, and in the pure components, as a function of composition at 25, 30, 35, 40 and 45 °C. The deviations in isentropic compressibility, Δks, excess molar volume, VE, deviations in ultrasonic speed, Δu, apparent molar compressibility, Ko,2, apparent molar volume, Vo,2, partial molar compressibility,K°o,2, and partial molar volume,V°2, of 1-alkanols in CAN have been calculated from the experimental data of densities and ultrasonic speeds. The variations of these parameters with composition of the mixtures indicate that the structure-breaking effect dominates over that of the hydrogen-bonding effect between unlike molecules, suggesting that CAN-alkanol interaction is weaker than CAN-CAN and alkanol-alkanol interactions, and that the interaction (CAN-alkanol) follows the order: 1-hexanol > 1-octanol > 1-decanol. The excess molar volume data have been analysed by using Flory and Prigogine-Flory-Patterson theories. Further, the ultrasonic speeds in these mixtures were theoretically calculated with the help of several theories and empirical relations using the pure component data. The validity and relative merits of these theories and relations have been discussed.
- 英文摘要: --
- 中文關鍵字: Densities; Ultrasonic speeds; Binary liquid mixtures; Intermolecular interactions.
- 英文關鍵字: --