Question

Solubility of CO₂ is ___________ higher than that of O₂.

• A. 10-15 times
• B. 2 times
• C. 20-25 times
• D. 200 times

Answer 1

Answer: (C)

Rate of diffusion is affected by the following factors :
a. Concentration/pressure gradient.
b. Solubility of the gases (Solubility of $C{O}_2$ is 20-25 times higher than that of $O_2$ , so $C{O}_2$ can diffuse at a higher rate).
c. Thickness of the membranes (Diffusion membrane at the level of alveoli is having a thickness of less than 1 mm, so it favours the diffusion of gases).