Conductance and viscosity of <i>n</i>-alkylamine hydrobromides in water at 25 °C: influence of hydrophobic hydration

Abstract

The equivalent conductivities and viscosities of the homologous salts RNH 3 Br, where R varies from H to n-octyl, have been measured in water at 25 °C. The data in the submicellar region can be represented adequately by the semi-empirical relations[Formula: see text]The parameters B η + and λ 0 + are both functions of the effective size of the organic ions in solutions, while the parameters D η and B Λ can be interpreted through structural salting-in of the hydrophobic cations. Viscosities and conductivities can be used equally well to study the micelle formation of n-octylamine hydrobromide.