If you add 1.00 mL of 1.00 M HCI to 100.0 mL of buffer solution that is 0.100 M acetic acid and 0.100 M sodium acetate, what is the pH of the final solution? The Ka of acetic acid is 1.78 x 10-5,a. 2.75b. 3.88c. 4.68d. 4.75