Heat capacities of binary mixtures of n-octane with each of the hexane isomers at 298.15 K

1986 ◽  
Vol 64 (11) ◽  
pp. 2139-2141 ◽  
Author(s):  
George C. Benson ◽  
Patrick J. D'Arcy

Volumetric heat capacities for binary mixtures of n-octane with n-hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane were measured at 298.15 K in a Picker flow microcalorimeter. The results were combined with previously published excess molar volumes to obtain excess molar isobaric heat capacities. Interpretation of the results in terms of the Flory theory of mixtures is discussed.

1984 ◽  
Vol 62 (11) ◽  
pp. 2369-2371 ◽  
Author(s):  
M. K. Kumaran ◽  
George C. Benson

Excess molar volumes, measured at 298.15 K in a tilting dilution dilatometer, are reported for the five binary systems formed by mixing n-octane with n-hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane. The Flory theory of mixtures provides a reasonable correlation of the results in combination with excess molar enthalpies measured previously.


1987 ◽  
Vol 65 (2) ◽  
pp. 322-325 ◽  
Author(s):  
George C. Benson ◽  
Carl J. Halpin

Measurements of ultrasonic speed were carried out for n-octane + each of the five hexanes at 298.15 K. The results were combined with excess molar volumes reported previously to obtain excess isentropic compressibilities and isentropic pressure derivatives of the excess molar volumes. These are in good agreement with estimates from the Flory theory of mixtures.


1994 ◽  
Vol 72 (2) ◽  
pp. 454-462 ◽  
Author(s):  
José Peleteiro ◽  
Clara A. Tovar ◽  
Enrique Carballo ◽  
José L. Legido ◽  
Luis Romaní

Excess molar volumes of mixtures of 2,5-dioxahexane + c-hexane, 2,5,8-trioxanonane + c-hexane, 2,5,8,11-tetraoxadodecane + c-hexane, and 2,5,8,11,14-pentaoxapentadecane + c-hexane were determined from density measurements at 283.15, 288.15, 298.15, and 308.15 K. These results allowed the following mixing quantities to be reported in the range of concentration: α, (δVE/δT)P, and (δHE/δP)T, at 298.15 K. The values obtained were then compared with the values calculated by using the Flory theory and the Nitta–Chao theory of liquid mixtures.


1986 ◽  
Vol 31 (2) ◽  
pp. 152-154 ◽  
Author(s):  
Jagjit S. Sandhu ◽  
Ashok K. Sharma ◽  
Ramesh K. Wadi

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