Excess molar volumes of the (cyclohexane plus pentane, or hexane, or heptane, or octane, or nonane) systems at the temperature 298.15 K

作者：Balan J; Moravkova L; Linek J^*

来源：Chemical Papers, 2007, 61(6): 497-501.

DOI：10.2478/s11696-007-0068-6

• cyclohexane
• alkanes
• binary mixtures
• density
• excess volume

The densities of the (cyclohexane + pentane, or hexane, or heptane, or octane, or nonane) systems were measured at the temperature 298.15 K by means of a vibrating-tube densimeter. Their respective excess molar volumes were calculated and correlated using the fourth-order Redlich-Kister equation, with the maximum likelihood principle being applied in the determination of the adjustable parameters. The values of excess molar volumes were negative for the cyclohexane + pentane system, whereas they were positive for the other systems with the values increasing with the number of carbon atoms in the respective alkane molecules.

• 出版日期2007-12