A buffer solution contains 0.55 mol of boric acid (H3BO3) and 0.34 mol of sodium dihydrogen borate (NaH2BO3) in 5.30 L. The Ka of boric acid (H3BO3) is Ka = 5.8e-10.
(a) What is the pH of this buffer? pH =
(b) What is the pH of the buffer after the addition of 0.45 mol of NaOH? (assume no volume change) pH =
(c) What is the pH of the original buffer after the addition of 0.07 mol of HI? (assume no volume change)