試題詳解

18. What volume of 2.0 M sodium hydroxide must be added to 200.0 mL of 1.00 M glycolic acid to produce a buffer solution having a pH of 4.00? (pKa for glycolic acid is 3.83)
(A) 67.6 mL
(B) 148 mL
(C) 59.7 mL
(D) 78.6 mL
(E) 83.3 mL