Depolarized Rayleigh light scattering studies of concentrated aqueous nitrate solutions

DOI PDF 被引用文献2件
  • Ronald A. Carpio
    Department of Chemistry, Case Western Reserve University, Clevelend, Ohio
  • Mehmed Mehicic
    Department of Chemistry, Case Western Reserve University, Clevelend, Ohio
  • Ernest Yeager
    Department of Chemistry, Case Western Reserve University, Clevelend, Ohio

抄録

<jats:p>Interferometric measurements of the reorientational relaxation time τ of the nitrate anion in concentrated aqueous calcium nitrate and zinc nitrate solutions have been made as a function of temperature and composition. Arrhenius plots of τ for Ca(NO3)2⋅XH2O, where X=4,5, and 5.6 and Zn(NO3)2⋅5H2O are linear and yield activation energies in the range of 5.6 and 8.3 kcal/mole. The data for Ca(NO3)2⋅3.91H2O, which cover the most extensive range of viscosity and temperature, were non-Arrhenius and were best fitted by the Vogel–Tamman–Fulcher equation from which an ideal glass transition temperature was derived. The viscosity dependence of τ for both the Ca(NO3)2 and Zn(NO3)2 solutions was found to be between that predicted by the classical Stokes-Einstein equation and that predicted using slip hydrodynamic boundary conditions. Nitrate rotation was found to be slower in Ca(NO3)2 solutions than in the corresponding Zn(NO3)2 solutions.</jats:p>

収録刊行物

被引用文献 (2)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ