Abstract
We have measured the viscosity coefficient B of the electrolytes NaCl and Bu4NBr in aqueous-organic mixtures containing up to 40% by weight of tert-butyl alcohol (TBA), as well as that of the non-electrolyte TBA in aqueous solutions of the salts NaCl and Bu4NBr. The variations of B were compared with those of the thermodynamic quantities ΔHtθ and ΔStθ of the solutes studied in these different media. The contribution of the solute to the free enthalpy of activation of viscosity has also been calculated.
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