Solubility of argon in acetone + water mixed solvent at 288.15, 298.15 and 308.15 K

Abstract

Solubilities of argon were determined in acetone + water mixed solvent over the full range of composition using a static method. The gas solubilities were measured at three temperatures of 288.15, 298.15 and 308.15 K. The solubility dependence on the temperature in the mixed solvent was measured and discussed, and the similarity between excess quantities of mixed solvent and those of gas solubilities was examined. The order of gas solubility of argon in acetone + water mixed solvent at the three different temperatures was 288. 15 > 298.15 > 308.15 K in the composition range of 0 ≤ x22 ≤ 0.15. However, the reverse relationship with temperature was observed in the range of composition of 0.15 < x2 ≤ 1.0. For all solubility curves, maximum and minimum values of solubility were observed at lower temperatures, but not at higher temperatures. Furthermore, the excess Ostwald coefficients on the basis of volume fraction which express the non‐ideality of gas solubility in non‐ideal solutions were defined, and they were expressed by a polynomial equation of the Redlich‐Kister (1948) type.

Solubilities of Nitrogen and Oxygen in 1,2-Ethanediol + Water at 298.15 K and 101.33 kPa

“…For monoalcohol aqueous solutions, the excess Ostwald coefficient and the excess volume against volume fraction showed the same tendency. Especially, excess Ostwald coefficients against the composition of the volume fraction of the solvent mixture showed the same curve regardless of the solute gas (15,18).…”

“…Our previous work was the measurement of gas solubility in aqueous monoalcohol solutions (16,17,19). We have already presented one correlation on gas solubility in these aqueous solutions.…”

“…We have already presented one correlation on gas solubility in these aqueous solutions. That is, the relation between the excess volume calculated from the density for the solvent mixture and the excess solubilities for the solute gas in these solvent mixtures showed similarity (18). Excess Ostwald coefficients on the basis of the volume fraction which express the nonideality of gas solubility in nonideal solutions was defined (14,15).…”