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Abstract

The applicability of the equation derived for calculating the dynamic viscosity of ternary non-electrolyte mixtures, to the correlation of viscosity data of the H₂O- K₂CO₃/KHCO₃ system is verified in this work. It was found out that the values of dynamic viscosity obtained experimentally are in good agreement with the viscosity values calculated from this equation. The equation constants - interaction coefficients - were determined from the measurements of dynamic viscosity on mixing the basic solutions of K₂CO₃ and KHCO₃ of known concentration. The correlation equation makes it possible to calculate viscosity of the K₂CO₃/KHCO₃ solutions in the K₂CO₃ and KHCO₃ concentration range from 0 to about 2.0 kmol m^-3.