In class, we calculated the pH of acid rain before the Industrial Revolution (i.e., Pco2 = 275 ppm) and during the middle of the century (i.e., Pco2 = 600 ppm) ignoring the contribution o CO32-. Re-calculate the pH of rainwater if we add the CO32- to the charge balance. Was ou assumption to ignore CO32- valid? In class, we calculated the pH of acid rain before the Industrial Revolution (i.e., Pco2 = 275 ppm) and during the middle of the century (i.e., Pco2 = 600 ppm) ignoring the contribution o CO32-. Re-calculate the pH of rainwater if we add the CO32- to the charge balance. Was ou assumption to ignore CO32- valid