A new method for determining the solubility of salts in aqueous solutions at elevated temperatures
A new method for measuring the solubility of simple salts in water at elevated temperatures involves heating assemblages of salt crystals plus solution vapor at a constant rate in a platinum-lined bomb. The dissolution of the last salt crystal is evidenced by a distinct discontinuity in the pressure-temperature curve. Studies of the solubilities of NaCl and of KC1 in water yielded equations expressing the solubility as functions of temperature, t in °C, at the vapor pressure of the solutions as follows:
weight percent NaCl=26.218+0.0072t+0.000106t2±0.05 weight percent NaCl
weight percent KCl=27.839+0.0794t+0.000027t2±0.10 weight percent KCl
The NaCl and KC1 data were measured over the temperature range 148° to 425°C and 148° to 371°C, respectively. However, the equation for NaCl appears to be valid over the range 0° to 800°C, and the KC1 equation appears valid over the range 100° to 450°C.
Citation Information
Publication Year | 1977 |
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Title | A new method for determining the solubility of salts in aqueous solutions at elevated temperatures |
Authors | Robert W. Potter, Scott Babcock, David L. Brown |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Journal of Research of the U.S. Geological Survey |
Index ID | 70233561 |
Record Source | USGS Publications Warehouse |