Question

The rate of $C{O}_2$ diffusion is much higher compared to $O_2$. What could be the possible reason for the same?

• A. Solubility of $O_2$ is higher than $C{O}_2$
• B. Solubility of $C{O}_2$ is higher than $O_2$
• C. $O_2$ is insoluble
• D. It does not depend upon the solubility of the gases

Answer 1

The correct option is B Solubility of $C{O}_2$ is higher than $O_2$

Diffusion is the process of movement of ions or molecules from a region of higher concentration to a region of lower concentration. The molecular arrangement of carbon dioxide makes it more soluble in blood compared to the solubility of oxygen. The solubility of carbon dioxide is 20-25 times higher than oxygen. Thus, higher the solubility higher will be the rate of diffusion.