An extension of the McAllister model to correlate kinematic viscosity of electrolyte solutions

This paper presents a new model for correlating kinematic viscosity of binary strong electrolyte solutions. The new model, based upon Eyring theory, considers that molecular interactions among anion, cation, and molecule occur in a certain way. The new equation correlates the viscosity of different aqueous electrolyte solutions within an absolute percentage error of 0.49% with a standard deviation of 0.4%. Comparison to existing correlations also appears in this work.List of symbols G * energy of activation [J/mol] constant [6.624 × 10−27 erg s/molecule, 6.624 × 10−25 g mm2/(s molecule)] nt of Eq. (23) nts of Eq. (24) lar weight, g/mol of moles roʹs number [6.023 × 1023] molecules/mol or number of data points in Eqs. (4) of experimental data points sal gas constant ature, [°C] ature [K] volumen [cm3/mol] raction letters δ G i j * ature dependent parameter of the new viscosity equation i * ature dependent parameter of the new viscosity equation j k * ature dependent parameter of the new viscosity equation c viscosity, m Pas tic viscosity, mm2/s iptsi, j, k s i, j, and k e e