Molar Excess Volume ofsec- andtert-Butyl Chloride with Aromatic Hydrocarbons atT= 298.15 K

2007 ◽  
Vol 52 (5) ◽  
pp. 2083-2085 ◽  
Author(s):  
Naveen Verma ◽  
Sanjeev Maken ◽  
Bal Raj Deshwal ◽  
Krishan Chander Singh ◽  
Jin-Won Park
Keyword(s):  
Aromatic Hydrocarbons ◽  
Excess Volume ◽  
Butyl Chloride ◽  
Molar Excess ◽  
Molar Excess Volume

Phasendiagramme und Exzeßvolumina der Systeme (CH3)2SiCl2/Pyridin und (CH3)2CCl2/Pyridin / Phase Diagrams and Excess Volumes of the Systems (CH3)2SiCl2/Pyridine and (CH3)2CCl2/Pyridine

1994 ◽  
Vol 49 (3) ◽  
pp. 412-416
Author(s):  
Michael W. Zenke ◽  
Karl Hensen
Keyword(s):  
Molar Volume ◽  
Phase Diagrams ◽  
Excess Volume ◽  
Excess Volumes ◽  
Molar Excess ◽  
Molar Excess Volume

Abstract The isobaric melting and boiling diagrams for the systems: dimethyldichlorosilane/pyridine and 2,2-dichloropropane/pyridine are reproduced. The existence of the incongruently melting addition compounds (CH3)2SiCl2 · (Pyridine)2 and [(CH3)2CCl2]3 · Pyridine could be proved. Some measurements of the molar volume of mixtures of pyridine and dimethyldichlorosilane, and pyridine and 2,2-dichloropropane are reported. For both systems the molar excess volume has been calculated as a function of the mole fractions.

Thermodynamische Untersuchungen zur Lewis-Acidität von Trimethylchlorsilan - die Phasendiagramme und Exzeßvolumina der Systeme (CH3)3SiCl/Pyridin und (CH3)3CCl/Pyridin / Thermodynamic Examinations on the Lewis Acidity of Trimethylchlorosilane - the Phase Diagrams and Excess Volumes of the Systems (CH3)3SiCl/Pyridin and (CH3)3CCl/Pyridin

1994 ◽  
Vol 49 (6) ◽  
pp. 759-762 ◽  
Author(s):  
Michael W. Zenke ◽  
Karl Hensen
Keyword(s):  
Molar Volume ◽  
Phase Diagrams ◽  
Excess Volume ◽  
Excess Volumes ◽  
Lewis Acidity ◽  
Molar Excess ◽  
Molar Excess Volume

The isobaric melting and boiling diagrams for the systems: trimethylchlorosilane/pyridine and trimethylchloromethane/pyridine are reproduced. Some measurements of the molar volume of mixtures between trimethylchlorosilane and pyridine and trimethylchloromethane and pyridine are reported. For both systems the molar excess volume has been calculated as a function of the mole fractions

Excess volumes for ethanol + water mixtures at 10-K intervals from 278.15 to 338.15 K

1980 ◽  
Vol 33 (10) ◽  
pp. 2121 ◽  
Author(s):  
KN Marsh ◽  
AE Richards
Keyword(s):  
Infinite Dilution ◽  
Excess Volume ◽  
Composition Range ◽  
Maximum Density ◽  
Excess Volumes ◽  
Temperature Dependent ◽  
Molar Excess ◽  
A Value ◽  
Molar Excess Volume ◽  
Temperature Of Maximum Density

The excess volumes of mixtures of xA ethanol+ xB water have been measured at 10-K intervals from 278.15 to 338.15 K over the whole composition range, various dilution dilatometers being used. Particular attention has been paid to regions dilute in both ethanol and water. The partial molar excess volume of ethanol at infinite dilution in water is extremely temperature-dependent, becoming more negative as the temperature increases. The partial molar excess volume of ethanol in dilute solutions is very concentration-dependent at low temperatures but the dependence approaches zero at 362 K. At an xA value of 0.038, the partial molar excess volume of ethanol VEA is independent of temperature, having a value of -5.23 cm3 mol-1, while the excess volume VEA is independent of temperature at xA = 0.082, having a value of -0.420 cm3 mol-1. These unusual observations are explained in terms of the variation of the temperature of maximum density with composition for dilute ethanol solutions. At high mole fractions of ethanol the excess volume and the partial molar excess volume of water do not show unusual behaviour.

Thermodynamische Untersuchungen der Systeme Pyridin/CH3SiCl3 und Pyridin/Cl3CCH3 / Thermodynamic Examinations of the Systems Pyridine/CH3SiCl3 and Pyridine/Cl3CCH3

1993 ◽  
Vol 48 (8) ◽  
pp. 1127-1132
Author(s):  
Michael W. Zenke ◽  
Karl Hensen
Keyword(s):  
Molar Volume ◽  
Excess Volume ◽  
Addition Compound ◽  
Molar Excess ◽  
Congruently Melting ◽  
Molar Excess Volume

The isobaric melting and boiling diagrams for the systems: pyridine/methyltrichlorosilane and pyridine/1,1,1-trichloroethane are reproduced. The existence of the congruently melting addition compound CH3SiCl3· (Pyridin)2 could be confirmed. Some measurements of the molar volume of mixtures between pyridine and methyltrichlorosilane and pyridine and 1,1,1-trichloroethane, respectively, are reported. For both systems the molar excess volume and for the system pyridine/methyltrichlorosilane the molar excess enthalpie have been calculated as a function of the mole fractions.

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.

Excess Volumes of Mixtures of Alkanols with Aromatic Hydrocarbons

1993 ◽  
Vol 58 (11) ◽  
pp. 2612-2624 ◽  
Author(s):  
Petr Munk ◽  
Anwei Qin ◽  
Dolly E. Hoffman
Keyword(s):  
Aromatic Hydrocarbon ◽  
Benzene Ring ◽  
Binary Mixtures ◽  
Aromatic Hydrocarbons ◽  
Excess Volume ◽  
Excess Volumes ◽  
Compositional Dependence ◽  
Benzene Toluene

The excess volumes of twenty binary mixtures of four aromatic hydrocarbons (benzene, toluene, ethylbenzene, and p-xylene) and five linear alkanols (methanol, ethanol, 1-propanol, 1-butanol, and 1-pentanol) at 20 °C are reported. The excess volume of systems with the same alkanol increases with increasing size and number of substituents on the benzene ring. For systems with the same aromatic hydrocarbon it increases with the length of the alkanols. The dependence of ∆V/φ1ϑ2 values on composition is noticeably asymmetric. Systems with benzene as one of the component show larger ∆V/φ1ϑ2 values than other systems and systems with methanol show different compositional dependence patterns.

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.

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