The most important buffer in blood consists of
Correct answer: C. H2CO3 and HCO3-
- A. HCI and CI-
- B. H2CO3 and CI-
- C. H2CO3 and HCO3-
- D. HCI and HCO3-
Explanation
The most important buffer in the blood consists of carbonic acid (H2CO3) and bicarbonate ion (HCO3−). This buffer system is known as the carbonic acid-bicarbonate buffer system. The carbonic acid-bicarbonate buffer system works by reacting with acids and bases to neutralize them. When an acid is added to the blood, the bicarbonate ion will react with the acid to form carbonic acid and water. When a base is added to the blood, the carbonic acid will react with the base to form water and carbon dioxide.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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