Which statement about buffers is true?
A)Buffers have a pH = 7.
B)Buffers consist of a strong acid and its conjugate base.
C)A buffer does not change pH on addition of a strong acid or strong base.
D)Buffers resist change in pH upon addition of small amounts of strong acid or strong base.

Question

Quizplus · Accepted Answer

Buffers resist changes in pH upon addition of small amounts of strong acid or strong base. Option A is not true as buffers can have a pH other than 7. Option B is not always true as buffers can also consist of a weak acid and its conjugate base or a weak base and its conjugate acid. Option C is not true as a buffer does change pH on addition of strong acid or base, but the change in pH is minimized as long as the buffer capacity is not exceeded.

Which Statement About Buffers Is True