Q. Although much carbon dioxide is carried in blood, yet blood does not become acidic because
A) $CO_{2}$ is continously diffused through the tissues and is not allowed to accumulate
B) $CO_{2}$ combines with water to form $H_{2}CO_{3}$, which is neutralized by ${{Na}_{2}CO}_{3}$
C) In $CO_{2}$ transport, blood buffers play an important role
D) $CO_{2}$ is absorbed by leucocytes
Explanation
Blood does not become acidic due to buffering action. Bicarbonates act as buffering agents. $H_{2}\ O + \ CO_{2} \rightleftharpoons \ H_{2}CO_{3} \rightleftharpoons H^{+} + HCO_{3}^{-}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.