Pressure dependence ot SrSO 4 solubility

Details Pressure dependence ot SrSO 4 solubility Pressure dependence ot SrSO 4 solubility

Jul 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974gecoa..38.1075n&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 38, Issue 7, pp.1075-1081

Physics

Scientific paper

The solubilities of SrSO 4 in seawater, 0.65 M NaCl and and distilled water were measured as a function of pressure at 2°C. The thermodynamic solubility product was determined from the distilled water measurements and stoichiometric solubility products were determined from the seawater and Nad measurements. The equilibrium quotient for SrSO 4 dissolution at ionic strength of 0.65 was calculated from the NaCl measurements, using the known NaSO 4 - ionpairing association constant. For each of the solubility products values of V were determined. These experimental values were all 11.0 ± 0.3 ml mole - lower than the theoretical values based on anhydrous SrSO 4 . This difference may be due to the equilibrating solid phase being a hydrated form of SrSO 4 .

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