The Electric Conductivity of the Molten Systems BiBr3-HgBr2 and BiBr3-CdBr2

1978 ◽  
Vol 33 (5) ◽  
pp. 597-600
Author(s):  
Slavko V. Mentus ◽  
Milenko V. Šušić
Keyword(s):  
Electric Conductivity ◽  
Binary Mixtures ◽  
Composition Range ◽  
Specific Conductivity ◽  
Entire Composition Range ◽  
Temperature Ranges

The electric conductivity of the molten binary mixtures BiBr3-HgBr2 and BiBr3-CdBr2 was measured for different molar compositions of the mixtures over the temperature ranges 500-770 K and 720-870 K , respectively. The curves o f the specific conductivity as a function of composition show in the BiBr3-HgBr2 system negative and positive deviations from additivity in the HgBr2- rich and BiBr3- rich composition regions, respectively. In the BiBr3-CdBr2 system the isotherms o f specific conductivity deviate positively from additivity over the entire composition range

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.

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 molar volumes, speeds of sound, and isentropic compressibilities of binary mixtures of furfural with some aliphatic alcohols

1989 ◽  
Vol 67 (4) ◽  
pp. 648-650 ◽  
Author(s):  
Homendra Naorem ◽  
Nand Kishore ◽  
S. K. Suri
Keyword(s):  
Binary Mixtures ◽  
Composition Range ◽  
Excess Molar Volumes ◽  
Aliphatic Alcohols ◽  
Entire Composition Range ◽  
Specific Interactions ◽  
Molar Volumes ◽  
Isentropic Compressibilities ◽  
Sound Speeds ◽  
Speeds Of Sound

Excess molar volumes and isentropic compressibilities for the binary mixtures of furfural with methanol, ethanol, 1 -propanol, 2-propanol, 1-butanol, and 2-butanol have been computed from the experimentally measured densities and sound speeds at 308.15 K over the entire composition range. All the systems studied exhibit contraction on mixing. The results have been discussed in terms of the specific interactions between the component molecules of the binary mixtures. Keywords: excess molar volumes, isentropic compressibilities, furfural, aliphatic alcohols, unlike reactions.

scholarly journals A Comparison Study on Molecular Interaction of an Acidic Organophosphoric Extractant with Substituted Aromatic Hydrocarbon (p-xylene/toluene) at 303.15K

2020 ◽  
Vol 11 (3) ◽  
pp. 10052-10058
Keyword(s):  
Binary Mixtures ◽  
Ultrasonic Velocity ◽  
Aromatic Hydrocarbons ◽  
Molecular Interaction ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Isentropic Compressibility ◽  
Extraction Process ◽  
Comparison Study ◽  
Intermolecular Free Length

In the present study, the excess molar volume (VE) and the deviations in intermolecular free length (ΔLf), isentropic compressibility (Δβs), acoustic impedance (ΔZ), and ultrasonic velocity (ΔU) were calculated using the experimentally measured values of density (ρ) and ultrasonic velocity (U) of binary mixtures of an acidic organophosphoric extractant (DEHPA) with two substituted aromatic hydrocarbons, i.e., p-xylene and toluene at 303.15K and atmospheric pressure, 0.1MPa over the entire composition range of DEHPA. The results of both binary mixtures have been presented graphically and compared in terms of molecular interaction between unlike molecules of the mixtures, which outcome may be applied in the solvent extraction process.

Alloyed (ZnSe)x(CuInSe2)1–xand CuInSexS2–xNanocrystals with a Monophase Zinc Blende Structure over the Entire Composition Range

2011 ◽  
Vol 50 (23) ◽  
pp. 11958-11964 ◽  
Author(s):  
Shenjie Li ◽  
Zechen Zhao ◽  
Qinghui Liu ◽  
Lijian Huang ◽  
Gang Wang ◽  
...  
Keyword(s):  
Composition Range ◽  
Entire Composition Range ◽  
Zinc Blende ◽  
Zinc Blende Structure

Excess Gibbs energy for binary mixtures of acetonitrile with acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid

1991 ◽  
Vol 69 (12) ◽  
pp. 2117-2121 ◽  
Author(s):  
T. S. Banipal ◽  
B. S. Lark ◽  
S. Singh
Keyword(s):  
Acetic Acid ◽  
Gibbs Energy ◽  
Carboxylic Acids ◽  
Propionic Acid ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Excess Gibbs Energy ◽  
Composition Range ◽  
Isobutyric Acid ◽  
Dimerization Constant

Total vapour pressures for binary mixtures containing acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid with acetonitrile have been measured for the entire composition range at 298.15 and 318.15 K using a static manometric method. All systems show positive deviations from Raoult's law, enhanced by both an increase in temperature and an increase in the methylation of acetic acid. Activity coefficients have been calculated by taking into consideration the dimerization of these carboxylic acids in the vapour phase. TSE values obtained from GE and earlier reported HE values are found to be negative for acetic acid, about zero for propionic and isobutyric acids, and positive for trimethylacetic acid for the whole composition range. The results have been interpreted in terms of various contributions such as depolymerization, heteromolecular dipole–dipole interactions, and the increasing dimerization constant and steric hindrance with increase of complexity of the acid. Key words: excess Gibbs energy, carboxylic acids, acetonitrile, activity coefficients

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