Which one of the following statements is true?
A)A buffer is an aqueous solution composed of two weak acids.
B)A buffer can absorb an unlimited amount of acid or base.
C)A buffer resists pH change by neutralizing added acids and bases.
D)A buffer does not change pH when strong acid or base is added.
E)None of the above are true.

Question

Quizplus · Accepted Answer

A buffer solution consists of a weak acid or base and its salt, and it resists changes in pH when small amounts of acid or base are added to it. The buffer solution can absorb or neutralize small amounts of acid or base, preventing a change in pH. However, it is not an unlimited capacity, and when the buffer capacity is exceeded, the pH will change significantly. Therefore, statement B is false. Statement A and D are also false, as buffers solutions are not composed of two weak acids or immune to the effects of strong acids or bases.

Which One of the Following Statements Is True