Answer to Question #300380 in Math for dylan

Question

The second stage reaction is,

HCO₃^- Û CO₃^2- + H⁺                                                                                                      (5)

and we can express the equilibrium concentrations of these chemicals as,

                                                                             (6)

You can see that both reactions (3) and (5) result in the generation of H⁺ ions.  The pH of a solution is a log transform of the concentration of H⁺, [H⁺]:

pH = -log₁₀[H⁺]                                                                                                                 (7)