申論題

3. Carbonate buffers are important in regulating the pH of blood at 7.40. If the carbonic acid concentration in a sample of blood is 1.2 mM, determine the bicarbonate ion concentration required to buffered the pH of blood at pH = 7.40.
H₂CO_3(aq)⇌HCO₃^-_(aq) + H⁺_(aq) ; K_a = 4.3✕10^-7