scholarly journals Excess volumes for binary liquid mixtures of 1-chlorobutane with normal alkanes

1980 ◽  
Vol 33 (11) ◽  
pp. 2543 ◽  
Author(s):  
A Krishnaiah ◽  
DN Rao ◽  
PR Naidu
Keyword(s):  
Chain Length ◽  
Binary Mixtures ◽  
Entire Range ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Excess Volumes ◽  
Excess Function ◽  
Normal Alkanes ◽  
Binary Liquid

Excess volumes for binary mixtures of 1-chlorobutane with hexane, heptane, octane and nonane were measured dilatometrically at 303.15 K. Excess volumes are positive over the entire range of composition in the four mixtures. Further, it is observed that increase in chain length increases the magnitude of the excess function.

Vapour pressures and excess Gibbs free energies of cyclohexane + n-hexane, + n-heptane and + n-octane at 298. 150 K

1980 ◽  
Vol 33 (10) ◽  
pp. 2133 ◽  
Author(s):  
ML Martin ◽  
JC Youings
Keyword(s):  
Chain Length ◽  
Mole Fraction ◽  
Vapour Pressure ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Free Energies ◽  
Excess Function ◽  
Binary Liquid

By means of a continuous dilution vapour pressure apparatus the excess Gibbs free energies of binary liquid mixtures of cyclohexane with n- hexane, n-heptane and n-octane at 298.150 K have been determined. The values of this excess function were positive at all concentrations and decreased with an increase in the chain length of the n-alkane. The maximum values, 75.9, 49.7 and 24.6 J mol-1, for the respective systems occurred in mixtures with a mole fraction of cyclohexane greater than 0.5.

Excess volumes for binary liquid mixtures of butylamine with aromatic and aliphatic hydrocarbons

1979 ◽  
Vol 57 (15) ◽  
pp. 1915-1918 ◽  
Author(s):  
Abburi Krishnaiah ◽  
Maripuri Sreenivasulu ◽  
Puligundla R. Naidu
Keyword(s):  
Hydrogen Bonds ◽  
Entire Range ◽  
Excess Volume ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Excess Volumes ◽  
Aliphatic Hydrocarbons ◽  
Volume Data ◽  
Binary Liquid ◽  
Benzene Toluene

Excess volume data for binary liquid mixtures of butylamine with aromatic and aliphatic hydrocarbons were measured as a function of composition dilatometrically at 303.15 and 313.15 K. The hydrocarbons include: benzene, toluene, three isomeric xylenes, hexane, heptane, and octane. The values of VE were found to be positive over the entire range of composition in all the eight systems at both the temperatures. The positive values were ascribed to the break-up of hydrogen bonds in the aggregates of amine by the hydrocarbons.

Excess volumes and viscosities of binary liquid mixtures

1968 ◽  
Vol 21 (11) ◽  
pp. 2717 ◽  
Author(s):  
GK Raman ◽  
PR Naidu ◽  
VR Krishnan
Keyword(s):  
Hydrogen Bonds ◽  
Binary Mixtures ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Excess Volumes ◽  
Viscosity Data ◽  
Substituted Phenols ◽  
Intermolecular Hydrogen Bonds ◽  
Binary Liquid

Excess volumes of binary mixtures of cyclohexane with phenol, o-ohlorophenol, p-chlorophenol, o-cresol, m-cresol, and p-oresol have been measured. The results have been used as an indication of relative strengths of intermolecular hydrogen bonds in phenol and substituted phenols. Viscosities of phenol, o-cresol, and o-chlorophenol in admixtures with cyclohexane have also been measured and the results of viscosity data were examined in the light of the relations developed for binary mixtures.

Thermodynamic Excess Functions of Binary Liquid Mixtures with Chain Association of One Component*. Part I: The Excess Gibbs Free Energy GE/RT

1976 ◽  
Vol 31 (12) ◽  
pp. 1651-1660 ◽  
Author(s):  
F. Becker ◽  
M. Kiefer ◽  
P. Rhensius ◽  
H. D. Schäfer
Keyword(s):  
Free Energy ◽  
Gibbs Free Energy ◽  
Chain Length ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Excess Gibbs Free Energy ◽  
Component Part ◽  
Excess Functions ◽  
Binary Liquid ◽  
Self Association

Abstract In this paper equilibrium models for the calculation of the excess Gibbs free energy of binary liquid mixtures are developed, the component A of which undergoes chain-forming self-association whilst the component B acts as an 'inert' solvent. It is shown that the extension of the well-known chain-association model of Mecke and Kempter, in which the probability of chain prolongation is assumed to be independent of chain length, is unable to establish satisfactory results because it does not exhibit sufficient unsymmetry. Reduction of the probability of chain growth with in-creasing chain length leads to an improved model with the geometric series replaced by the exponential series. This model, in which only two parameters are used, i. e. the equilibrium constants K for mutual solvation of A and B, and ρ for self-association of A, allows fitting of isothermal experimental GE /R T literature data on cycloalkanol-cycloalkane, alkanol-alkane, and NMF -CCl4 systems within the limits of experimental error. Compared with the two-parameter Wilson equation which gives equally small standard deviations, our equilibrium model has the advantage of allowing passage from GE to HE data and of being applicable to liquid-liquid equilibria.

Excess molar volumes and viscosities of binary mixtures of some polyethers with propylamine at 298.15 K

2002 ◽  
Vol 80 (5) ◽  
pp. 467-475 ◽  
Author(s):  
Amalendu Pal ◽  
Rakesh Kumar Bhardwaj
Keyword(s):  
Experimental Data ◽  
Viscous Flow ◽  
Binary Mixtures ◽  
Entire Range ◽  
Excess Volume ◽  
Excess Molar Volumes ◽  
Liquid Mixtures ◽  
Molar Volumes ◽  
Binary Liquid ◽  
Volume Viscosity

Excess molar volumes (VmE) and dynamic viscosities (η) have been measured as a function of composition for binary liquid mixtures of propylamine with 2,5-dioxahexane, 2,5,8-trioxanonane, 2,5,8,11-tetraoxadodecane, 3,6,9-trioxaundecane, and 5,8,11-trioxapentadecane at 298.15 K. The excess volumes are positive over the entire range of composition for the systems propylamine + 2,5-dioxahexane, and + 3,6,9-trioxaundecane, negative for the systems propylamine + 2,5,8,11-tetraoxadodecane, and + 5,8,11-trioxapentadecane, and change sign from positive to negative for the remaining system propylamine + 2,5,8-trioxanonane. From the experimental data, deviations in the viscosity (Δln η) and excess energies of activation for viscous flow (ΔG*E) have been derived. These values are positive for all mixtures with the exception of propylamine + 2,5-dioxahexane.Key words : excess volume, viscosity, binary mixtures.

Excess volumes and partial molar volumes of binary liquid mixtures of furfural or 2–methylfuran with alcohols at 298.15 K

2019 ◽  
Vol 134 ◽  
pp. 20-30 ◽  
Author(s):  
L.M. Follegatti–Romero ◽  
F.H.B. Sosa ◽  
M.C. Costa ◽  
D.T. Tavares ◽  
L.H. de Oliveira ◽  
...  
Keyword(s):  
Partial Molar Volumes ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Excess Volumes ◽  
Molar Volumes ◽  
Binary Liquid
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