All of the following statements concerning acid-base buffers are true EXCEPT A) buffers are resistant to pH changes upon addition of small quantities of strong acids or bases. B) buffers are used as colored indicators in acid-base titrations. C) the pH of a buffer is close to the pK_a of the weak acid from which it is made. D) buffers contain appreciable quantities of a weak acid and its conjugate base. E) buffers are resistant to changes in pH when diluted with water.

Question

Quizplus · Accepted Answer

Buffer solutions are not used as colored indicators in acid-base titrations. Their main role is to resist pH changes upon addition of small amounts of strong acids or bases. The other statements are all true.

All of the Following Statements Concerning Acid-Base Buffers Are True