SOLID-LIQUID EQUILIBRIA OF MG(OH)2(CR) AND MG2(OH)3CL.4H2O(CR) IN THE SYSTEM MG-NA-H-OH-CL-H2O AT 25°C
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dc.contributor.author | Altmaier M. | |
dc.contributor.author | Metz V. | |
dc.contributor.author | Neck V. | |
dc.contributor.author | Muller R. | |
dc.contributor.author | Fanghanel T. | |
dc.date.accessioned | 2021-12-29T04:38:01Z | |
dc.date.available | 2021-12-29T04:38:01Z | |
dc.date.issued | 2003 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=5063933 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 2003, 67, 19, 3595-3601 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/33905 | |
dc.description.abstract | The solubility of crystalline Mg(OH)2(cr) was determined by measuring the equilibrium H+ concentration in water, 0.01-2.7 m MgCl2, 0.1-5.6 m NaCl, and in mixtures of 0.5 and 5.0 m NaCl containing 0.01-0.05 m MgCl2. In MgCl2 solutions above 2 molal, magnesium hydroxide converted into hydrated magnesium oxychloride. The solid-liquid equilibrium of Mg2(OH)3Cl.4H2O(cr) was studied in 2.1-5.2 m MgCl2. Using known ion interaction Pitzer coefficients for the system Mg-Na-H-OH-Cl-H2O (25°C), the following equilibrium constants at I = 0 are calculated: Mg(OH)2(cr) + 2 H+ # Mg2+ + 2 H2O log K°s = 17.1 +/- 0.2 Mg2(OH)3Cl.4H2O(cr) + 3 H+ # 2 Mg2+ + Cl- + 7 H2O log K°s = 26.0 +/- 0.2 The experimental results are discussed with regard to discrepancies in frequently used databases and computer codes for geochemical modeling, such as EQ3/6, Geochemist's Workbench and CHESS. | |
dc.title | SOLID-LIQUID EQUILIBRIA OF MG(OH)2(CR) AND MG2(OH)3CL.4H2O(CR) IN THE SYSTEM MG-NA-H-OH-CL-H2O AT 25°C | |
dc.type | Статья |
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