Biology — Bicarbonate Buffer
The blood pH buffer and its physiological control.
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\text{CO}_2 + \text{H}_2\text{O} \rightleftharpoons \text{H}_2\text{CO}_3 \rightleftharpoons \text{H}^+ + \text{HCO}_3^-
\text{pH} = 6.1 + \log\frac{[\text{HCO}_3^-]}{0.03\,P_{CO_2}}
\text{lungs adjust } \text{CO}_2
\text{kidneys adjust } \text{HCO}_3^-