試題詳解

2. The sodium salt, NaA, of a weak acid is dissolved in water； no other substance is added. Which of these statements (to a close approximation) is true?
(A) [H⁺] = [A^-]
(B) [A^-] = [OH^-]
(C) [HA] = [OH^-]
(D) [H⁺] = [OH^-]
(E) none of these