29) One of the buffers that contribute to pH stability in human blood is carboni

Question

29) One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that, when placed in an aqueous solution, dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H), as noted below. H2CO3 + HCO3+H+ If the pH of blood drops, one would expect A) the HCO3 to act as a base and remove excess Ht by the formation of H2CO3 B) the concentration of bicarbonate ions (HCO3-) to increase C) the HCO3" to act as an acid and remove excess Ht* by the formation of H2CO3 D) a decrease in the concentration of H2CO3 and an increase in the concentration of HCo3

Explanation / Answer

The correct Answer is A.The bicarbonate ions to act as a base and remove excess hydrogen ion by the formation of carbonic acid.

To maintain the ph of the blood bicarbonates neautrilizes the excess acid and the carbonic acid neutralizes the base.

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