A shear viscosity study of cerium (III) nitrate in concentrated aqueous solutions at different temperatures

Kinematic viscosities and densities of Ce(NO3)3 in aqueous solutions, from pure water to very concentrated solutions, were determined at different temperatures. Shear viscosity data for this asymmetrical 3:1 electrolyte were calculated. For the low concentrations (C < 0.1 mol dm-3), the Jones-Dole coefficients A and B were determined for this rare-earth salt by fitting the quadratic behaviour of the square root of the molar concentration with the least-squares method. At concentrations above 1 mol l-1, the logarithm of viscosity can be fitted by a third-order polynomial, where the coefficients exhibit a linear dependence on the reciprocal of the absolute temperature. This phenomenon is due to the strong ion - solvent correlation. (author)