摘要:

Excess volumes (VE) and deviations in isentropic compressibilities (Ks) were reported over the entire mole fraction range for mixtures of 1-heptanol with 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1,2,2-tetrachloroethane, trichloroethene and tetrachloroethene, at 303.15 K. The values ofVEandKsare positive for the systems, 1-heptanol + 1,2-dichloroethane, +1,1,1-trichloroethane, + trichloroethene and + tetrachloroethene. Inversion in sign ofVEandKsfrom positive to negative is observed in mixtures of 1-heptanol with 1,1,2,2-tetrachloroethane. The experimental data were used to explain the effect of successive chlorination and unsaturation of ethane molecule onVEandKs.

ISSN:0031-9104    

DOI:10.1080/00319108908028449

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Viscosities of binary mixtures of tetrachloroethylene with hexane, heptane, cyclohexane, methylcyclohexane, toluene, chlorobenzene, bromobenzene and nitrobenzene were measured at 303.15 K. The values of ηEare negative in all the systems except in tetrachloroethylene + bromobenzene system. An inversion in sign from positive to negative is observed in the system, tetrachloroethylene + bromobenzene. The viscosity data were analysed in terms of absolute reaction rate and free volume theories of liquid viscosity. Further, Grunberg and Nissan Parameter has also been evaluated.

ISSN:0031-9104    

DOI:10.1080/00319108908028450

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

A large number of experimental results have shown that macromolelcules in solution give rise to ordered (thyxotropic) structures, a noticeable role being played by a dynamic correlation. In the present paper we develop a semi-phenomenological model that can be solved analytically. The model is able to describe in a quantitative way both structural and dynamical properties of a thyxotropic solution.

ISSN:0031-9104    

DOI:10.1080/00319108908028451

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Ultrasonic velocities (U) and densities (p) for binary liquid mixtures of acetophenone with 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1,2,2-tetrachloroethane, trichloroethene and tetrachloroethene were determined over the whole composition range at 303.15 K. Isentropic compressibilities (ks) and deviation in isentropic compressibilities (Ks) were computed from experimental sound velocities and densities. The experimental data were used to explain the effect of successive chlorination and unsaturation on ethane molecules.

ISSN:0031-9104    

DOI:10.1080/00319108908028452

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

A variational principle is set up in the framework of relativistic density functional theory, which yields the relativistic linear-response relation between displaced chargev(x) and weak perturbing potentialV(x) in an electron liquid. In particular, the kinetic energy is calculated to second-order in the displaced chargev(x).

ISSN:0031-9104    

DOI:10.1080/00319108908028453

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The vacancy formation energy in units of the melting temperature can be approximated for close-packed metals in terms of the difference in specific heats and the long wavelength limit of the liquid structure factor. Here, some results are first presented ford-electron metals to complement earlier data ons-pmetals. Secondly, contact is made with the semiempirical treatment of Miedema.

ISSN:0031-9104    

DOI:10.1080/00319108908028454

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Experimental data which demands that one transcends the ‘method of neutral pseudoatoms’ for expanded alkali metals is first summarized. A chemical ‘bondrlsquo; provides a more basic building block than a pseudoatom. This ‘bond’ can be characterised by potential curves1σ+uand3σ+uof the appropriate free-space diatom (e.g. Na2) plus local coordination properties. The relation to the metal-insulator transition is thereby discussed as the coordination number reduces to 2.

ISSN:0031-9104    

DOI:10.1080/00319108908028455

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Dielectric constant of binary mixtures of aniline and also pyridine in nonpolar liquids namely benzene, carbon tetrachloride,p-xylene andn-heptane have been measured at 455 kHz for four different temperatures. Eyring's interaction parameterG* based on the significant structure model is calculated in the mixtures using the experimentally determined value of dielectric constant.

ISSN:0031-9104    

DOI:10.1080/00319108908028456

出版商:Taylor & Francis Group    

年代:1989

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:10.1080/00319108908028448

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor