The Vapor Pressure of the Saturated Aqueous Solutions of Certain Salts

Water Activity Data Assessment to Be Used in Hanford Waste Solubility Calculations

“…Thus, all five of these datasets are considered self consistent and will be used in this study. The data in Leopold et al (1927) does not appear to be consistent with other datasets. The Leopold et al (1927) data changes both ionic strength and temperature because they measured the water activity in solutions that are at saturation with respect to sodium sulfate.…”

“…The data in Leopold et al (1927) does not appear to be consistent with other datasets. The Leopold et al (1927) data changes both ionic strength and temperature because they measured the water activity in solutions that are at saturation with respect to sodium sulfate. At 298.15 K, Leopold et al (1927) predicts a saturation vapor pressure of 0.860, which is very close to the 0.866 reported by Rard (1981) and the value of 0.865 reported by Rard et al (2000).…”

“…However, the ionic strengths at saturation are very different between the Rard et al (1981;2000) and the Leopold et al (1927) data (9.5 molal versus 11.1 molal in Rard, 1981). Thus, there appears to be an error in the concentration at saturation reported by Leopold et al (1927) and, therefore, these data were excluded from the study.…”

“…At 298.15 K, Leopold et al (1927) predicts a saturation vapor pressure of 0.860, which is very close to the 0.866 reported by Rard (1981) and the value of 0.865 reported by Rard et al (2000). However, the ionic strengths at saturation are very different between the Rard et al (1981;2000) and the Leopold et al (1927) data (9.5 molal versus 11.1 molal in Rard, 1981). Thus, there appears to be an error in the concentration at saturation reported by Leopold et al (1927) and, therefore, these data were excluded from the study.…”

“…The Leopold et al (1927) data changes both ionic strength and temperature because they measured the water activity in solutions that are at saturation with respect to sodium sulfate. At 298.15 K, Leopold et al (1927) predicts a saturation vapor pressure of 0.860, which is very close to the 0.866 reported by Rard (1981) and the value of 0.865 reported by Rard et al (2000). However, the ionic strengths at saturation are very different between the Rard et al (1981;2000) and the Leopold et al (1927) data (9.5 molal versus 11.1 molal in Rard, 1981).…”