Manifestations of the effects of nonrigidity of molecules in the thermodynamic and transport characteristics of water vapor

V. I. Starikov, V. P. Kochanov

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    The influence of bending-rotation excitation of H2O on the thermodynamic and transport characteristics of water vapor was quantitatively analyzed. The second virial coefficient, the self-diffusion coefficients of excited H2O molecules, and the diffusion coefficients of these molecules in polar and nonpolar gases were considered. Substantial changes in the dipole moment of molecules caused by bending-rotation excitations were shown to seriously affect these characteristics in certain instances. An effective method for averaging the kinetic collision integrals over polar molecule orientations was suggested. The averaged integrals were determined in a wide range of variations of the parameter characterizing dipole-dipole interactions of molecules.

    Original languageEnglish
    Pages (from-to)530-534
    Number of pages5
    JournalRussian Journal of Physical Chemistry A
    Issue number4
    Publication statusPublished - 1 Apr 2002


    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry

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