Which of the following statements does NOT describe a pH buffer?
A) A common buffer is a solution of acetic acid and acetate.
B) A buffer is a weak acid and the acid's conjugate base in equal concentrations.
C) A buffer is a physical barrier that blocks the addition of acid or base to a solution.
D) A buffer is a solution that resists change of pH upon addition of small amounts of acid or base.
E) Phosphates and bicarbonate are buffering systems in the body.

Question

Quizplus · Accepted Answer

Buffers are chemical systems that resist changes in pH, not physical barriers. They work by neutralizing added acids or bases, not by blocking their addition.

Which of the Following Statements Does NOT Describe a PH