Which of the following is true?
A)An effective buffer has a [base]/[acid] ratio in the range of 10 - 100.
B)A buffer is most resistant to pH change when [acid] = [conjugate base]
C)An effective buffer has very small absolute concentrations of acid and conjugate base.
D)A buffer cannot be destroyed by adding too much strong base.It can only be destroyed by adding too much strong acid.
E)None of the above are true.

Question

Quizplus · Accepted Answer

A buffer is most resistant to pH change when [acid] = [conjugate base]. This is because at this point, the buffer has the maximum capacity to neutralize any added acid or base without causing a significant change in pH. The other options are not correct: A is incorrect because effective buffers have a pH range that is unique to each buffer system and can vary widely, from 3.5 to 7.5 or higher. B is the correct answer because it corresponds to the Henderson-Hasselbalch equation, which describes the behavior of buffers. C is incorrect because an effective buffer should have significant absolute concentrations of both acid and conjugate base in order to provide a substantial buffering capacity. D is incorrect because a buffer can be destroyed by adding too much strong base, which can react with the buffer's conjugate acid to form a salt and water, thereby depleting the buffer's acid concentration and disrupting the buffer capacity.

Which of the Following Is True