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Assuming that the buffer in blood is CO2-HCO3^-, calculate the ratio of conjugate base to acid necessary to maintain blood

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Assuming that the buffer in blood is CO2-HCO3-, calculate the ratio of conjugate base to acid necessary to maintain blood at its proper pH, 7.4. K1 (H2CO3) = 4.5 x 10–7.

(a) 11.25 

(b) 12.25

(c) 11.0 

(d) 11.75

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Correct option: (a) 11.25

Explanation: 

CO2 with H2O forms H2CO3 

CO2 + H2O ⇌ H+ + HCO3- 

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