1) How much .0100 M HCl is required to titrate 250 mL of .0190 M Na2CO3, and how much .0100 M HCl is required to titrate 250 mL of .0190 NaHCO3?
2) Calculate the pH of a .155 M solution of Morphine if it's pkb=5.79
3) Calculate the pH of a 1.23x10^-2 M solution if the pkb of its conjugate base is 3.86