試題詳解

19. Which of the following statements is incorrect?
(A) A buffered solution is one that resists a change in pH when either hydroxide ions or protons are added.
(B) The ability of a buffer system to resist pH changes is its buffer capacity, indicated by ẞ value.
(C) The Henderson-Hasselbalch equation enables to approximate the pH of a buffer solution.
(D) The hydronium ion concentration of a solution containing a weak acid and its conjugate base is independent of the ratio of the molar concentrations of these two solutes as well as dilution.

(E) The composition of buffer solutions can be visualized by plotting the relative equilibrium concentrations of the two components of a conjugate acid/base as a function of the pH of the solution.