Excess enthalpies and excess volumes for n-hexane + 2-methylpentane, + 3-methylpentane and + 2,3-dimethylbutane at 283.15, 298.15 and 313.15 K

1980 ◽  
Vol 33 (9) ◽  
pp. 1921 ◽  
Author(s):  
JB Ott ◽  
RB Grigg ◽  
JR Goates
Keyword(s):  
Composition Range ◽  
Molecular Shape ◽  
Excess Volumes ◽  
Entire Composition Range ◽  
Excess Enthalpies ◽  
Vibrating Tube Densimeter

Excess enthalpies and excess volumes were determined over the entire composition range and at the three temperatures 283.15,298.15 and 313.15 K for mixtures of n-hexane with the three isomeric hexanes: 2- methylpentane, 3-methylpentane and 2,3-dimethylbutane. The excess enthalpies were measured with a microflow calorimeter and the excess volumes with a vibrating-tube densimeter. ��� The results are correlated with the molecular shape of the isomeric hexane.

Excess volumes of toluene mixtures with some alcohols at 303.15 K

1980 ◽  
Vol 58 (3) ◽  
pp. 229-230 ◽  
Author(s):  
Goolla Narayana Swamy ◽  
Golla Dharmaraju ◽  
Gurajala Kodanda Raman
Keyword(s):  
Binary Mixtures ◽  
Excess Volume ◽  
Composition Range ◽  
Excess Volumes ◽  
Entire Composition Range ◽  
Dilatometric Method

Excess volumes for binary mixtures of toluene with 1-propanol, 2-propanol, 1-butanol, 2-methyl-1-propanol, 1-pentanol, 1-hexanol, 1-heptanol, and cyclohexanol have been measured as a function of composition at 303.15 K by a dilatometric method. The excess volume curves for 1-propanol and 1-butanol are sigmoid. For other alcohols VE values are positive over the entire composition range.

Thermodynamic Properties of Isomeric Butanols with 2-Bromobutane

2002 ◽  
Vol 216 (11) ◽  
Author(s):  
H. Artigas ◽  
V. Rodríguez ◽  
M. Haro ◽  
F.M. Royo ◽  
C. Lafuente
Keyword(s):  
Thermodynamic Properties ◽  
Composition Range ◽  
Excess Volumes ◽  
Excess Enthalpies ◽  
Isomeric Butanols

Excess volumes and excess enthalpies for mixtures of isomeric butanols with 2-bromobutane were determined at the temperatures of 298.15 K and 313.15 K. Excess volumes are positive over the whole composition range except for the mixture 1-butanol with 2-bromobutane at 298.15 K in which

Excess molar volumes of binary mixtures of 2-hexanone with n-alkane at 298.15 K

1985 ◽  
Vol 63 (12) ◽  
pp. 3354-3356 ◽  
Author(s):  
J. Ortega ◽  
M. I. Paz-Andrade ◽  
E. Rodriguez-Nunez ◽  
E. Jimenez
Keyword(s):  
Binary Mixtures ◽  
Alkyl Group ◽  
Composition Range ◽  
Excess Molar Volumes ◽  
Entire Composition Range ◽  
Molar Volumes ◽  
Hexane System ◽  
Vibrating Tube Densimeter

The excess molar volumes, [Formula: see text], of 2-hexanone (MBK) with n-hexane, n-heptane, n-octane, n-nonane, n-decane, n-undecane, n-dodecane, and n-tridecane have been obtained at 298.15 K from densities measured with a vibrating tube densimeter. The [Formula: see text] are positive over the entire composition range in all mixtures, with the exception of the MBK + n-hexane system, where an inversion of the sign of [Formula: see text] is observed. In other systems, [Formula: see text] increases with increasing size of the alkyl group in n-alkane.

Excess Molar Volumes of Butyl Acetate+an n-Alkanol at 298.15 K

1985 ◽  
Vol 38 (10) ◽  
pp. 1435 ◽  
Author(s):  
J Ortega ◽  
MI Paz-Andrade ◽  
E Rodriguez-Nunez ◽  
L Romani
Keyword(s):  
Binary Mixtures ◽  
Atmospheric Pressure ◽  
Butyl Acetate ◽  
Composition Range ◽  
Excess Molar Volumes ◽  
Hydrocarbon Chain ◽  
Excess Volumes ◽  
Entire Composition Range ◽  
Specific Interactions ◽  
Molar Volumes

Excess molar volumes VEm at 298.15 K and atmospheric pressure were calculated over the entire composition range from densities measured with a vibrating-tube digital densimeter for the binary mixtures butyl acetate + methanol, + ethanol, + propan-1-ol, + butan-1-ol, + pentan-1- ol, + hexan-1-ol, + heptan-1-ol, + octan-1-ol, + nonan-1-ol and + decan-1-ol. The excess volumes are positive over the entire composition range for these mixtures except the system butyl acetate + methanol, for which all VEm values are negative. The excess volumes show a consistent trend towards more positive values as the length of the hydrocarbon chain of the alkanol increases. The results suggest the presence of specific interactions.

Excess volumes of binary mixtures of cyclohexanone with some monosubstituted benzenes at 298.15 K

1983 ◽  
Vol 61 (9) ◽  
pp. 2147-2150 ◽  
Author(s):  
B. Chawla ◽  
S. K. Mehta ◽  
R. V. Jasra ◽  
S. K. Suri
Keyword(s):  
Binary Mixtures ◽  
Molecular Interactions ◽  
Composition Range ◽  
Excess Volumes ◽  
Entire Composition Range ◽  
Density Data ◽  
Molar Excess ◽  
Monosubstituted Benzenes ◽  
Molar Excess Volumes ◽  
Experimental Density

Molar excess volumes for the binary mixtures of cyclohexanone with benzene and some monosubstituted benzenes, namely, toluene, ethylbenzene, isopropylbenzene, tertiary butylbenzene, chlorobenzene, bromobenzene, iodobenzene, N,N-dimethylaniline, nitrobenzene, benzaldehyde, and benzonitrile have been calculated from the precise and accurate experimental density data at 298.15 K over the entire composition range. The results have been discussed in terms of the strength of molecular interactions in the binary mixtures.

Excess enthalpies of dibutyl ether + n-alkane mixtures at 298.15 K

1988 ◽  
Vol 66 (4) ◽  
pp. 531-534 ◽  
Author(s):  
George C. Benson ◽  
Beichen Luo ◽  
Benjamin C.-Y. Lu
Keyword(s):  
Composition Range ◽  
Entire Composition Range ◽  
Excess Enthalpies ◽  
Dibutyl Ether ◽  
Flory Theory ◽  
Calorimetric Measurements

Calorimetric measurements of excess enthalpies are reported over the entire composition range for dibutyl ether + n-heptane, + n-deeane, + n-dodecane, and + n-hexadecane at 298.15 K. The results are compared with data from the literature, and a correlation of the excess enthalpies of dibutyl ether + n-alkane mixtures in terms of the Flory theory is described.

scholarly journals Excess molar volume of the acetonitrile + alcohol systems at 298.15K. Part I: Density measurements for acetonitrile + methanol, + ethanol systems

2002 ◽  
Vol 67 (8-9) ◽  
pp. 581-586 ◽  
Author(s):  
Ivona Grguric ◽  
Aleksandar Tasic ◽  
Bojan Djordjevic ◽  
Mirjana Kijevcanin ◽  
Slobodan Serbanovic
Keyword(s):  
Molar Volume ◽  
Excess Molar Volume ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Entire Composition Range ◽  
Density Measurements ◽  
Binary Liquid ◽  
Liquid Systems ◽  
Vibrating Tube Densimeter ◽  
Kister Equation

The excess molar volume VE of the binary liquid systems acetonitrile methanol and acetonitrile + ethanol has been evaluated from density measurements at 298.15K and at atmospheric pressure over the entire composition range. A vibrating tube densimeter, type Anton Paar DMA 55, was applied for these measurements. The Redlich?Kister equation was used to fit the experimental VE data.

Excess volumes and refractive indices in the benzene-tert-amyl methyl ether and cyclohexane-tert-amyl methyl ether systems at 298.15 K

1987 ◽  
Vol 52 (12) ◽  
pp. 2839-2843 ◽  
Author(s):  
Jan Linek
Keyword(s):  
Methyl Ether ◽  
Excess Molar Volumes ◽  
Excess Volumes ◽  
Refractive Indices ◽  
Molar Volumes ◽  
Vibrating Tube Densimeter ◽  
Ether System

Excess molar volumes in the benzene-tert-amyl methyl ether and cyclohexane-tert-amyl methyl ether systems were measured by a vibrating-tube densimeter at 298.15 K and compared with the data for the methanol-tert-amyl methyl ether system determined previously. Besides, the refractive indices in both the systems were measured at the same temperature.

Excess enthalpies and excess volumes for (butane + butan-1-ol) at the temperatures (298.15, 323.15, and 348.15) K and pressures (5, 10, and 15) MPa

1994 ◽  
Vol 26 (12) ◽  
pp. 1275-1286 ◽  
Author(s):  
J.T. Sipowska ◽  
L.R. Lemon ◽  
J.B. Ott ◽  
P.R. Brown ◽  
B.G. Marchant
Keyword(s):  
Excess Volumes ◽  
Excess Enthalpies
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