Densities and Viscosities for Aqueous Solutions of Sodium Chlorate and Potassium Chlorate + Methanol from (288.15 to 318.15) K at 0.1 MPa

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 (0.1 to 1) and (0.01 to 0.5) 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, 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 by 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. The values of the parameters indicate that a stronger interaction of solvent–ions occurs in the potassium chlorate solution than in the 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 show 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 0.29%.

Densities of Dilute Aqueous Solutions of 1-Butanol and 1-Pentanol at Atmospheric Pressure and Temperatures in the Range of 283.15 to 353.15 K

“…Vibrating-tube density meters were used in most experimental investigations of the density of dilute aqueous solutions of 1-butanol and 1-pentanol reported in the published literature, and very impressive uncertainties were claimed (≤ 0.005 kg·m –3 ). However, it should also be noted that in other recent studies in which vibrating-tube density meters were used, more conservative standard uncertainty estimates have been reported (0.1 to 2.0 kg·m –3 ). ,− Pycnometers − have also been used to determine the density of dilute aqueous solutions of 1-butanol and 1-pentanol, with reported uncertainties ranging from 0.01 to 5 kg·m –3 .…”