Chemistry, 01.11.2019 02:31 luiscastaenda
Uman blood is kept at a typical ph of 7.40 mainly by the carbonic acid–carbonate ion buffer system. the corresponding chemical equation describing the buffer would be: h2co3(aq) h2o(l) ⇌ hco3-(aq) h3o (aq) the appropriate ka value for carbonic acid is 4.3×10-7, so its pka value is 6.37. calculate the [base]/[acid] ratio in human blood. (answer to 3 significant figures, no units)
Answers: 1
![\frac{[HCO_{3}^{-}]}{[H_{2}CO_{3}]}](/tpl/images/0355/0720/887f9.png)
, is 10.7
is an weak acid and 
is it's conjugate base.![pH=pK_{a}(H_{2}CO_{3})+log(\frac{[HCO_{3}^{-}]}{[H_{2}CO_{3}]})](/tpl/images/0355/0720/8cc41.png)
=6.37![7.40=6.37+log(\frac{[HCO_{3}^{-}]}{[H_{2}CO_{3}]})](/tpl/images/0355/0720/a095c.png)
![\frac{[HCO_{3}^{-}]}{[H_{2}CO_{3}]}=10.7](/tpl/images/0355/0720/0e463.png)
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Uman blood is kept at a typical ph of 7.40 mainly by the carbonic acid–carbonate ion buffer system....
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