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Which of the following is responsible for buffer system of blood?

Option: 1

H_{2}CO_{3}and HCO_{3}^{-}


Option: 2

CO_{2} and H_{2}O


Option: 3

H_{2}CO_{3}and CO_{2}


Option: 4

HCO_{3}^{-} and H_{2}O


Answers (1)

best_answer

 

Carbonic acid buffer system -

CO2 forms H2CO3 in water which dissociates and form buffer system, that helps in maintaining pH of blood (7.26 to 7.42)

- wherein

H_{2}CO_{3}+H_{2}O\rightleftharpoons HCO_{3}^{-}+H_{3}O^{+}

HCO_{3}^{-}+H_{2}O\rightleftharpoons CO_{3}^{2-}+H_{3}O^{+}

 

 Buffer system of blood is maintain by HCO3- and  H2CO3 .

H_{2}CO_{3}\rightleftharpoons H^{+}+ HCO_{3}^{-}

 

Posted by

Ritika Kankaria

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