A buffer solution is prepared by using 0.750 M acetic acid (CH3COOH) and 0.750 M sodium acetate (CH3COONa). Given the Ka of CH3COOH is 1.74 × 10−5, what is the pH of this buffer solution? Select one: a. 7.000 b. 4.759 c. 1.000 d. 9.241