Temperature dependence of molar excess volumes and excess thermal expansion coefficients for binary mixtures of cyclohexane with some hydrocabons between 298.15 and 313.15 K

1990 ◽  
Vol 163 ◽  
pp. 191-202 ◽  
Author(s):  
A. Arimoto ◽  
H. Ogawa ◽  
S. Murakami
Keyword(s):  
Thermal Expansion ◽  
Temperature Dependence ◽  
Binary Mixtures ◽  
Excess Volumes ◽  
Molar Excess ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Molar Excess Volumes

Thermodynamics of binary mixtures of 1,2-dichloroethane with aromatic hydrocarbons

1980 ◽  
Vol 58 (18) ◽  
pp. 1902-1905 ◽  
Author(s):  
Ram K. Nigam ◽  
Prem P. Singh ◽  
Krishan C. Singh ◽  
Mohan Singh ◽  
Ruchi Mishra
Keyword(s):  
Binary Mixtures ◽  
Aromatic Hydrocarbons ◽  
Vapour Pressure ◽  
Excess Volumes ◽  
Equimolar Mixture ◽  
Excess Enthalpies ◽  
Molar Excess ◽  
Experimental Values ◽  
Molar Excess Volumes

Molar excess volumes, VE at 298.15 and 308.15 K, molar excess enthalpies HE at 308.15 K, and total vapour pressure at 298.15 and 308.15 K. have been measured for binary mixtures of 1,2-dichloroethane with aromatic hydrocarbons. The VE and HE data for an equimolar mixture at 308.15 K only have been utilized to predict VE, HE, and TSE values (using Sanchez and Lacombe theory) for these mixtures as a function of temperature and composition. The agreement between the predicted and the corresponding experimental values is good so far as VE and HE data are concerned but the same is not true of the TSE values.

Temperature and pressure dependence of the volumetric properties of binary mixtures containing polyhaloalkanes

1999 ◽  
Vol 77 (12) ◽  
pp. 2046-2052 ◽  
Author(s):  
Carmen Jarne ◽  
Manuela Artal ◽  
José Muñoz Embid ◽  
Inmaculada Velasco ◽  
Santos Otín
Keyword(s):  
Thermal Expansion ◽  
Binary Mixtures ◽  
Isothermal Compressibility ◽  
Excess Volume ◽  
Excess Molar Volumes ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Temperature And Pressure ◽  
Density Excess ◽  
Volume Thermal Expansion Coefficient

Densities of binary mixtures of 1,1,2-trichlorotrifluoroethane + dibromomethane, + bromochloromethane, or + bromotrichloromethane were measured over their entire composition ranges at 288.15 and 308.15 K. Thermal expansion coefficients (α) and excess molar volumes (VEm) were calculated. Moreover, densities at 298.15 K and pressures up to 80 bar (1 bar = 100 kPa) were determined for these same mixtures. Isothermal compressibilities (KT) of the pure liquids and their mixtures were obtained.Key words: density, excess volume, thermal expansion coefficient, isothermal compressibility.

Pycnometric determination of densities and excess volumes of binary mixtures containing at least one associating component

1990 ◽  
Vol 55 (10) ◽  
pp. 2395-2403 ◽  
Author(s):  
Kamila Chýlková ◽  
Ivona Malijevská
Keyword(s):  
Acetic Acid ◽  
Propionic Acid ◽  
Binary Mixtures ◽  
Trifluoroacetic Acid ◽  
Excess Volume ◽  
Excess Volumes ◽  
Molar Excess ◽  
Molar Excess Volumes

Densities at 20 °C and molar excess volumes calculated from them are reported in the work for the mixtures of the substances: propionic acid-n-heptane, propionic acid-benzene, trifluoroacetic acid-benzene, propionic acid-cyclohexane, acetic acid-cyclohexane, acetic acid-trifluoroacetic acid, acetic acid-propionic acid, and propionic acid-trifluoroacetic acid. For the last system mentioned, a strange dependence of excess volume on composition was found which is noted for three local extremes. The dependences of excess volume on composition are correlated by the Redlich-Kister polynomial.

Molar excess volumes of binary liquid mixtures: 2-pyrrolidinone with C6–C10n-alkanols

1996 ◽  
Vol 74 (1) ◽  
pp. 121-127 ◽  
Author(s):  
Begoña García ◽  
Francisco J. Hoyuelos ◽  
Rafael Alcalde ◽  
José M. Leal
Keyword(s):  
Steric Effect ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Excess Volumes ◽  
Density Measurements ◽  
Binary Liquid ◽  
Thermal Expansion Coefficients ◽  
Maximum Value ◽  
Expansion Coefficients ◽  
Molar Excess Volumes

The excess volumes VE of the binary mixtures 2-pyrrolidinone–(C6–C10) n-alkanols have been calculated from density measurements over the whole composition range and the 298.15–318.15 K temperature range. The excess volumes were independent of temperature, but changed noticeably with the chain length of the alkanol. The VE values were only positive starting from heptanol, with the maximum value, 0.239 cm3 mol−1, for equimolar decanol. The observed changeover VE < 0 to VE > 0 suggests that the steric effect is primarily responsible for the positive contributions to VE. The thermal expansion coefficients α were evaluated from the variation of densities with temperature. Key words: excess volumes, 2-pyrrolidinone, n-alkanols, liquid mixtures, hydrogen bonding.

scholarly journals Studies on Thermophysical Properties of CaO and MgO by γ-Ray Attenuation

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
A. S. Madhusudhan Rao ◽  
K. Narender
Keyword(s):  
Thermal Expansion ◽  
Temperature Dependence ◽  
Thermophysical Properties ◽  
Linear Thermal Expansion ◽  
Temperature Dependent ◽  
Degree Polynomial ◽  
Attenuation Coefficients ◽  
Temperature Range ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients

The study on temperature dependent γ-ray attenuation and thermophysical properties of CaO and MgO has been carried out in the temperature range 300 K–1250 K using different energies of γ-beam, namely, Am (0.0595 MeV), Cs (0.66 MeV), and Co (1.173 MeV and 1.332 MeV) on γ-ray densitometer fabricated in our laboratory. The linear attenuation coefficients (μl) for the pellets of CaO and MgO as a function of temperature have been determined using γ-beam of different energies. The coefficients of temperature dependence of density have been reported. The variation of density and linear thermal expansion of CaO and MgO in the temperature range of 300 K–1250 K has been studied and compared with the results available in the literature. The temperature dependence of linear attenuation coefficients, density, and thermal expansion has been represented by second degree polynomial. Volume thermal expansion coefficients have been reported.

Pyridine—pyridine interactions in binary mixtures of nonelectrolytes: Molar excess volumes

1984 ◽  
Vol 16 (1) ◽  
pp. 25-39 ◽  
Author(s):  
R.K. Nigam ◽  
P.P. Singh ◽  
Sadhna Aggarwal ◽  
S.P. Sharma
Keyword(s):  
Binary Mixtures ◽  
Excess Volumes ◽  
Molar Excess ◽  
Molar Excess Volumes

Thermal expansivities of water + tetrahydrofuran mixtures at 298.15 K

1978 ◽  
Vol 56 (22) ◽  
pp. 2803-2807 ◽  
Author(s):  
Osamu Kiyohara ◽  
Patrick J. D'Arcy ◽  
George C. Benson
Keyword(s):  
Thermal Expansion ◽  
Mole Fraction ◽  
Structural Changes ◽  
Molar Excess ◽  
Thermal Expansion Coefficients ◽  
Thermal Expansivities ◽  
Expansion Coefficients ◽  
Mole Fraction Range

Densities of water + tetrahydrofuran mixtures were measured at 5 K intervals of temperature from 288.15 to 308.15 K. Excess thermal expansion coefficients and partial molar excess thermal expansivities at 298.15 K over the whole mole fraction range were derived from the results. The significance of the expansivities is discussed in terms of the structural changes accompanying the formation of the mixture.

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