Intermolecular interactions in water + acetonitrile mixtures : Evidence from the composition variation of solvent polarity parameters

Abstract

The dependence on composition of the polarity of H₂O+MeCN mixtures has been determined from measurements of the empirical solvent polarity parameter E_T. E_T has been found to vary with composition in a similar fashion to that which has been reported previously for most other H₂O+non-electrolyte mixtures for which E_T data are available. The variation of E_T with composition is interpreted in terms of the Naberukhin-Rogov structural model for H₂O+nonelectrolyte mixtures.