The average pH of precipitation in rural areas is 6.80. Assuming that the pH
is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere, calculate the amount of calcium carbonate (mg) dissolved per liter of rainwater. pKa1=6.33, KCO2=3.388e-02
I've seen a couple different solutions to this problems and all of them use other constants and numbers that I have no idea where they got them from. Please explain