Journal of Solution Chemistry

, Volume 8, Issue 11, pp 767–777 | Cite as

Viscosity of ternary mixtures. II. Water-tert-butyl alcohol-alkali halides

  • Marc Palma
  • Jean-Pierre Morel
Article
Received:
Revised:

Abstract

The viscosities of binary alkali halide-water systems and of ternary alkali halide-tert-butyl alcohol-water systems have been measured at 25°C in the water-rich region. The relative viscosities of the ternary solution are expressed by an extended form of the Jones-Dole equation
$$\begin{gathered} \eta /\eta _0 = 1 + {\text{A}}_E {\text{m}}_E^{1/2} + {\text{B}}_E {\text{m}}_E + {\text{B}}_N {\text{m}}_N + {\text{D}}_{EE} m_E^2 \hfill \\ + {\text{D}}_{NN} {\text{m}}_N^2 + {\text{D}}_{EN} {\text{m}}_E {\text{m}}_N + ... \hfill \\ \end{gathered} $$

wheremE andmN are the molalities of the electrolyte E and nonelectrolyte N expressed in mole-kg−1 of water. The parameterAE accounts for the long-range ionic forces, andBE andBN are the Jones-DoleB coefficients of E and N. It is shown, in particular, that theDEN term is additive for different ionic pairs and that it can be correlated to the entropic coefficient of pair interaction. TheDEN coefficients thus seem to reflect some pair interaction contribution to the excess viscosity of ternary mixtures.

Key words

Viscosity aqueous ternary systems alkali halides tert-butyl alcohol 
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Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • Marc Palma
    • 1
  • Jean-Pierre Morel
    • 1
  1. 1.Laboratoire d'Etude des Interactions Solutés-SolvantsUniversité de ClermontAubièreFrance

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