Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

In this work, we present densities and viscosities of aqueous solutions of sodium and potassium chlorate from (288.15 to 318.15) K at molalities from (0.001 to 1) and (0.01 to 0.5) m for the aqueous solutions of sodium and potassium chlorate, respectively. Also, densities and viscosities of these aqueous solutions of sodium and potassium chlorate + methanol are measured from (288.15 to 318.15) K at concentration from (0.1 to 1) and (0.1 to 0.3) m, respectively. Densities are from a vibrating tube densimeter and viscosities are from a rolling ball microviscosimeter. Ternary mixtures are prepared adding (1 to 20) % volume of methanol to the aqueous solutions. Apparent molar volumes are calculated from the density measurements. Apparent molar volumes have been correlated using an extended Redlich-Rosenfeld-Meyer equation. Parameters values indicate that stronger interaction solvent-ions occurs in the potassium chlorate solution than sodium chlorate aqueous solutions. The equation correlates the data within an average absolute percentage deviation of 3.7 %. Limiting apparent molar volumes for the sodium and potassium chlorate aqueous solution from this work agree within 1.9 cm3/mol with the literature values. Solutions of potassium chlorate shows an iso-viscosity behavior at the temperatures and concentrations considered in this work. Also, the Dole-Jones equation correlates the viscosity data within an average absolute percentage deviation of 0.544 %.