Given that carbonic acid, H₂CO₃, has a pKa1 = 6.37 and a pKa2 = 10.33, answer the following.
(a) If you wanted to make a pH 7 buffer solution starting with NaHCO₃(aq), would you add 0.10 M HCl or 0.10 M NaOH?
0.10 M HCl
(b) If you began with 9.5 mL of 0.43 M NaHCO₃, how many mL of your choice from (a) would you need to add to get a pH 7 buffer? mL