摘要:

The solution of the Percus-Yevick (PY) equation for a binary mixture with a square well potential as a perturbation has been applied to the study of the Pb-Bi molten alloy system. The partial structure factors in the long wavelength limit is calculated and used to evaluate the long wavelength limit of the concentration-concentration fluctuationsScc(0). This has in turn been used to obtain the Warren-Cowley short range order parameter α1and the chemical diffusion D. The calculations indicate compound forming tendencies in Pb-Bi molten alloys with greater magnitude at low atomic fraction of Bismuth.

ISSN:0031-9104    

DOI:10.1080/00319109708035909

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The dielectric loss in the frequency range 200 MHz-10 GHz have been measured in dilute solutions of mesitylene for three binary mixtures of ζ = 0.25, 0.50 and 0.75 MF of N, N-dimethylformamide (DMFA) in 1-hexanol. Similar measurements have also been carried out for dilute solutions of 1-hexanol ζ = 0 and DMFA ζ = 1 in mesitylene. The variation of static permittivity ϵsand dielectric loss ϵ” of DMFA-Mesitylene systems as a funtion of ζ indicates a solute-solute type of molecular association between both components through a strong hydrogen bonding. The molecular association between DMFA and 1-hexanol is maximum around 1:1 ratio (i.e. ζ = 0.50).

ISSN:0031-9104    

DOI:10.1080/00319109708035910

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Densities (ρ), viscosities (η), and ultrasonic velocities (u) through solutions of lithium nitrate in dimethylsulphoxide (DMSO) + ethanol mixtures have been measured as a function of electrolyte concentration and temperature. The suitability of various polynomial equations in reproducing the experimental values of ρ, η, anduwas checked for the present system. The adiabatic compressibility (β), intermolecular free length (Lf), relative association (RA), specific acoustic impedance (Z), molar sound velocity (Rm), enthalpy (ΔH*) and entropy (ΔS*) of activation of viscous flow have been computed. The results are explained in terms of solvent-solvent and ion-solvent interactions.

ISSN:0031-9104    

DOI:10.1080/00319109708035911

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Experimental solubilities are reported at 25.0°C for thianthrene dissolved in twenty-one different organic nonelectrolyte solvents containing ether-, hydroxy-, andt-butyl-functional groups. Results of these measurements combined, with our previously published thianthrene solubility data inn-hexane,n-heptane,n-octanc, cyclohexane, methylcyc-lohexane, 2, 2, 4-trimethylpentane and cyclooctane, are used to test the applications and limitations of expressions derived from Mobile Order theory. For the 20 solvents for which predictions could be made computations show that Mobile Order theory does provide fairly reasonable (although by no means perfect) estimates of the saturation mole fraction solubilities. Average absolute deviation between predicted and observed values iscirca58%. In comparison, the average absolute deviation increases significantly to 1,940% when ideal solution behavior is assumed.

ISSN:0031-9104    

DOI:10.1080/00319109708035912

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Measurements of density, ultrasonic velocity and viscosities for binary mixtures of methyl salicylate(1) + dimethyl sulfoxide(2), ethyl salicylate(1) + dimethyl sulfoxide(2), methyl benzoate(1) + dimethylsulfoxide(2) and benzyl salicylate(1) + dimethyl sulfoxide(2) respectively are reported from 303.15-318.15 K over the entire range of composition. Also other related physical parameters viz. adiabatic compressibility, excess adiabatic compressibility, intermolecular freelength, Rao's constant, Wada's constant, excess volume and excess viscosity have been computed. The extent and nature of interactions among the component liquids are discussed.

ISSN:0031-9104    

DOI:10.1080/00319109708035913

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Contact is established between an approximate chemical collision model and a full statistical mechanical treatment of the distribution function of an anyon liquid. The range of validity of the chemical model is thereby delineated.

ISSN:0031-9104    

DOI:10.1080/00319109708035914

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0031-9104    

DOI:10.1080/00319109708035908

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor