Question: what is the chemical equation for the bicarbonate buffer system?
Answer: This quantity provides an indication of the degree to which HCO3- reacts with H+ (or with H3O+ as written in Equation 10) to form H2CO3, and subsequently to form CO2 and H2O. In the case of the carbonic-acid-bicarbonate buffer, pK=6.1 at normal body temperature.