Effect of pressure on the solubilities of LiF, NaF, KCl, NH 4 , Cl, K 2 SO 4 , (NH 4 ) 2 SO 4 , and ZnSO 4 ·7H 2 O in water at 298.15 K
1994; Taylor & Francis; Volume: 11; Issue: 6 Linguagem: Inglês
10.1080/08957959408203163
ISSN1477-2299
AutoresSeiji Sawamura, Takeo Ishigami, Nobuaki Egoshi, Masao Tsuchiya, Yoshihiro Taniguchi, Keizô Suzuki,
Tópico(s)Crystallization and Solubility Studies
ResumoAbstract Solubilities of seven inorganic compounds in water were measured at 298.15 K and up to 350 MPa. The solubilities of K2SO4, LiF, NaF, and KCI increased with increasing pressure, those of NH4Cl and (NH4)2SO4 decreased, and that of ZnSO4·7H2O showed almost no dependence on pressure. From the slopes of these solubility curves at 0.1 MPa, we estimated the volume changes accompanying the dissolution of the solutes. These values coincided with the volume differences between the partial molar volume at saturation and the molar volume of the crystal within ca. ± 1 cm3 mol−.
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