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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases2 Marks
Question
Compared to $O _2$, diffusion rate of $CO _2$ through the diffusion membrane, unit difference in partial pressure is much higher. Explain.
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Answer

Solubility is an important factor deciding diffusion rate. As the solubility of $CO _2$ is 20-25 times higher than $O _2$, diffusion of $CO _2$ through the diffusion membrane per unit difference in partial pressure is much higher.

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