The partial molal volume of calcium carbonate in sea water

Details The partial molal volume of calcium carbonate in sea water The partial molal volume of calcium carbonate in sea water

Jul 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972gecoa..36..729d&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 36, Issue 7, pp.729-734

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Scientific paper

The partial molal volumes ( ) of K 2 CO 3 and Na 2 CO 3 have been experimentally determined, at 20°C, for sea water (35%.) and for 0.725 M NaCl. For sea water, equals 28.3 ± 0.8 ml/mole and equals 9.0 ± 1.5 ml/mole; for 0.725 M NaCl, equals 23.17 ± 0.35 ml/mole and equals 1.74 ± 0.23 ml/mole. Using the sea water values and some literature values for other salts in sea water, for sea water was calculated to be -6.5 ± 1.7 ml/mole. This value does not agree with calculated from data for the effect of pressure on the solubility product of calcium carbonate in sea water. A possible explanation is that the data on the pressure coefficient of the solubility of calcium carbonate may be in error.

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