摘要:

Under the assumption that the coupling between the sound modes and modes associated with heat and mass diffusion can be neglected, an expression for the Landau-Placzek ratio for multicomponent fluids is derived using thermodynamic fluctuation theory. Applications of the general formula to ternary systems are discussed briefly

ISSN:0031-9104    

DOI:10.1080/00319107208084097

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

Just as molecular structure, as revealed by X-ray diffraction, can be interpreted in terms of intuitive models, so liquid structure can be interpreted in terms of a model which leads to a partition function giving the Helmholtz free energy in terms of volume, temperature, and composition. From this explicit expression for the Helmholtz free energy all thermodynamic properties are calculable and can be compared with experiment. Absolute Rate Theory permits the prediction of transport properties from this same model, providing still further insight into liquid structure. Here, Significant Liquid Structure Theory has been applied to twelve substituted benzenes and the results compared with experiment. A single equation is derived for the twelve substances differing in ten of the cases only in three parameters having to do with the solid-like part of the liquid. For simple liquids these properties are those of the solid at the melting point. These properties are the energy of sublimation, molar volume of the solid, and the Einstein characteristic temperature, . Hindered rotation is explained in terms of a barrier to rotation of one tenth the energy of sublimation

ISSN:0031-9104    

DOI:10.1080/00319107208084098

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

Hall coefficient for CuSO4liquid electrolyte has been measured and found to be positive. Detection of Hall signal was limited to de methods although ac techniques were also investigated. The Hall coefficient increases with decreasing concentration of solute and for distilled water approaches 5 × 105cm3/coul. Calculations of H+ion mobility using the two carrier expression for Hall coefficient show the charge carrier in a liquid electrolyte to be the H+ion. Mobility of the proton in water is of the order of 1 cm2voltsec, which is near the value in ice

ISSN:0031-9104    

DOI:10.1080/00319107208084099

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

The self-motion response function and incoherent scattering functionSs(k, ω) for simple classical liquids is studied using an exact representation presented in a previous paper. The latter can be termed a generalized mean field representation to distinguish it from the generalized hydrodynamic representation introduced elsewhere. It is shown that the present formalism offers a natural and convenient way of relating the experimentally determinedSs(k, ω) to some basic quantities involving only the interaction. Using a small part of the recent experimental data on incoherent neutron scattering in liquid argon, we are able to calculateSs(k, ω) and other quantities of interest and to compare with the rest of the data

ISSN:0031-9104    

DOI:10.1080/00319107208084100

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

The roots of the hydrodynamic matrix for a two species chemically reactive system are obtained under assumptions for which the pressure fluctuations are decoupled from those in entropy and concentration. All roots are affected by the chemical reaction and attention is directed to the implications of the resulting dependence of the roots for the determination of chemical reaction rates from light scattering spectra

ISSN:0031-9104    

DOI:10.1080/00319107208084101

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor