Premium
THE EFFECT OF CARBON DIOXIDE ON THE SPECIFIC VOLUME OF SEAWATER 1
Author(s) -
Bradshaw Alvin
Publication year - 1973
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1973.18.1.0095
Subject(s) - seawater , carbon dioxide , carbonate ion , molality , carbonate , volume (thermodynamics) , chemistry , bicarbonate , salinity , carbonic acid , artificial seawater , inorganic chemistry , calcium carbonate , carbon fibers , boric acid , environmental chemistry , geology , oceanography , organic chemistry , materials science , thermodynamics , physics , aqueous solution , composite number , composite material
Carbon dioxide gas was dissolved in samples of natural seawater and artificial seawater containing no boric acid, and the changes in volume of the solutions were measured. In natural seawater of 35‰ salinity at 23°C the computed density increased with decreasing pH by 0.009 σ t units for a pH change from 8.7 to 7.5. The changes in volume at lower pH values gave 33.4 cm 3 mole −1 for the partial molal volume of dissolved molecular carbon dioxide. In the artificial seawater of 35‰ salinity at 23°C the partial equivalent volume of the bicarbonate ion minus that of the carbonate ion was 22.5 cm 3 equiv −1 . Values for the partial equivalent volume of the carbonate ion relative to that of the chloride ion and for the volume change for the solution of calcium carbonate in seawater were estimated.