Abstract
The solubility of carbon dioxide in water was measured at temperatures from 1 °C to 15 °C, at pressures approaching the clathrate-forming pressure. The goal was to fill gaps in the literature as well as to look for evidence of structural changes in liquid water near the onset of clathrate formation. The data were analyzed according to the Krichevsky−Kasarnovsky (KK) equation. The Henry's law constant KH and the partial molar volume at infinite dilution were determined at each temperature. Contrary to claims based on older data in the literature, the KK equation was found to be an adequate representation of the solubility. The Henry's law constants are in excellent agreement with accepted literature values. No evidence was found for dramatic changes in water structure as the clathrate-forming pressure is approached.
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