For a triprotic acid (H3G) has pKa1 = 2.10, pKa2 = 6.10, pKa3 = 10.10. (A) what's the conjugated base of HV2- ?
(B) At what pH the concentration [H3V-] = [V2-]?
(C) what reagent/s are needed to prepare an pH 10.00 buffer, assuming you have access to strong acid and strong base in addition to the H3V? Describe qualitative how you would prepare the needed pH buffer, and what are the criteria to evaluate whether the pH buffer is good/effective.