Water gas solubility

The amount of a gas which will dissolve in a liquid chiefly depends upon the gas pressure—the greater the gas pressure, the greater its solubility. Gas solubility will be even greater if the gas reacts with the solvent, e.g., ammonia and carbon dioxide in water. Gas solubility is quantitatively described by Henry s law, which states that the amount of a gas dissolved in a liquid at a fixed temperature depends only upon the gas pressure. This is true for both pure gases and mixtures of gases. The solubilities of gases in a mixture depend upon the pressure each gas would exert if it were present alone, i.e., its partial pressure. In quantitative terms, Henry s law states... 

Another important example of distribution between phases is that between a gas and the gas species dissolved in water. Gas solubilities are described by Henry s law as discussed for oxygen solubility in water in Chapter 3, Section 3.8.1. 

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