試題詳解

72. Which of the following statements is correct?
(A) Arrhenius postulated that an acid is a proton (H⁺) donor, and a base is a proton acceptor.
(B) A buffer with a large capacity contains large volumes of the buffering components.
(C) For the titrations of weak acids with strong bases, the greater pH value at the equivalence point is obtained when the stronger acid is used.
(D) For a particular buffering system, all solutions that have the same ratio of [A^– ]/[HA] have the same pH value.
(E) An acid-base indicator can be used to determine the equivalence point of an acid-base titration because of its ability to mark the half-equivalence point of a titration by changing color.