The table below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure.Units of solubility are given in grams per 100 millilitres of water (g/100 ml), unless shown otherwise. 3-2). This limited concentration is called the solubility of the salt in the particular liquid. K c: what we want. The change in solubility of calcium carbonate with temperature and carbon dioxide content. Frear G. L., Johnston J., "The Solubility of Calcium Carbonate (Calcite) in Certain Aqueous Solutions at 25 C", Journal of the American Chemical Society, 51, (7), 2082-2093, 1929. This seems contradictory to what is normally observed in the field. Publication No. Prudhomme M., Journal de Chimie Physique et de Physico Chimie Biologique, 9, 532, 1911. 1932 The table below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure. Shternina E. B., Frolova E. V., "The Solubility of Calcite in the Presence of CO2 and NaCl", Izvestiya Sektora Fiziko Khimicheskogo Analiza Institut Obshchei Neorganicheskoi Khimii Akademiia Nauk SSSR, 21, 271-287, 1952. The temperature derivative of solubility of calcite at constant CO2 concentration varies from −10−6 to −3 × 10−5 molal/°C, being a maximum for the highest CO2 concentration and temperature. Fresenius R., "Ueber die Loslichkeitsverhaltnisse von Einigen, bei der Quantitativen Analyse als Bestimmungsformen etc. 1932 Lubavin N. N., Journal of the Russian Physical Chemical Society, 24, 389, 1892. 2004 Comparison of solubility of calcium carbonate with different salts of 1925 1915 1929 Johnston J., "The Solubility - Product Constant of Calcium and Magnesium Carbonates", Journal of the American Chemical Society, 37, (9), 2001-2020, 1915. Magnesian calcite is more soluble than pure calcite and its solubility generally increases with increasing Mg content (Berner, 1975). Malinin S. D., "Experimental Investigation of Calcite and Witherite Solubility Under Hydrothermal Conditions", Geochemistry, (7), 650-667, 1963. Theoretical Perspective. 1963 1931 Notice how NaCl’s solubility is relatively constant regardless of temperature, whereas Na2SO4’s solubility increases exponentially over 0–35 degrees Celsius and then abruptly begins to decrease. The measurements were made in the absence of a gas phase in a newly developed conductometric solubility apparatus. Units of solubility are given in grams per 100 millilitres of water (g/100 ml), unless shown otherwise. 186, Shell Development Company, Exploration and Production Research Division, Houston, Texas. Wells R. C., "The Solubility of Calcite in Water in Contact With the Atmosphere, and Its Variation With Temperature", Journal of the Washington Academy of Sciences, 5, 617-622, 1915. At 25° C: Calcite K c = 10-8.35 Aragonite K c = 10-8.22. 1 GEOL 414/514 CARBONATE CHEMISTRY Chapter 6 LANGMUIR SOLUBILITY OF CALCITE • CaCO 3 in nature: calcite & aragonite • Reaction with strong acid: CaCO 3 + 2H+ Ca+2 + H 2O + CO 2 • Reaction with weak acid: CaCO 3 + +H+ Ca 2 + HCO 3-• Summary of reaction in nature: CaCO 3 + H 2CO 3 Ca+2 + 2HCO 3-• Solubility depends on partial pressure of CO 2 H 2O(l) + CO 2(g) H 2CO 3(aq) 1923 The confusion occurs because of the assumed presence of carbon dioxide (CO 2).Normally atmospheric air contains approximately 300 ppm CO 2.However, when initially using the OLI software such as the OLI Studio … The solubility of calcite and aragonite in carbonic acid has been determined over a CO 2 concentration range from 10 −4 to 10 −3 molal and a temperature range from 10° to 70°C. 2019) and it decreases with increase in temperature (Coto et al. Pratolongo U., Atti Della Accademia Nazionale dei Lincei, 1, (6), 238-243, 1925. 1893 The stoichiometric solubility constants of calcite and aragonite in seawater were determined over a wide range of salinity (5.44 per mil) and temperature (5o-40o) at 1 atm total pressure. 1952 1907 No Air Cameron F. K., Robinson W. O., "The Solubility of Calcium Carbonate in Aqueous Solutions of Potassium Chloride and Potassium Sulphate at 25 C", Journal of Physical Chemistry, 11, (8), 577-580, 1907.