How many times more soluble is carbon dioxide compared to oxygen?

The correct answer reflects the solubility of carbon dioxide (CO2) relative to oxygen (O2) due to differences in their chemical properties and behaviors in solution. Carbon dioxide is significantly more soluble in water than oxygen, which facilitates its transport in the bloodstream and contributes to various physiological processes, such as respiration and acid-base balance.

Specifically, the solubility of CO2 in water is approximately 20 times greater than that of O2 under comparable conditions. This increased solubility can be attributed to the ability of CO2 to form carbonic acid when it dissolves in water, enhancing its presence in aqueous environments compared to the more hydrophobic nature of O2.

Understanding this difference in solubility is crucial for cardiovascular perfusionists, as it impacts the management of gas exchanges during procedures such as cardiopulmonary bypass, where appropriate gas levels must be maintained to ensure proper patient oxygenation and carbon dioxide removal.