Q.
The pH of blood is 7.4. If the buffer in blood is CO2 and HCO3−, calculate the ratio of conjugate base to acid (H2CO3) to maintain the pH of the blood. Given K1 of H2CO3=4.5×10−7
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a
8.5
b
10.0
c
11.25
d
None of these
answer is C.
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Detailed Solution
CO2+H2O⇌HCO3−+H+; K1=[HCO3−][H+][CO2]=4.5×10−7 or [HCO3−][CO2]=4.5×10−7[H+]=4.5×10−74×10−8=11.25
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