When mixed in appropriate amounts,each of the following mixtures can produce an effective buffer solution EXCEPT A) HCl and NaH₂PO₄ B) Na₂HPO₄ and Na₃PO₄. C) NaHCO₃ and Na₂CO₃. D) NaH₂PO₄ and Na₂HPO₄. E) NaOH and NaF.

Question

Quizplus · Accepted Answer

A buffer solution consists of a weak acid and its conjugate base, or a weak base and its conjugate acid, in roughly equal amounts. Option E contains NaOH, a strong base, which cannot serve as a component of a buffer solution. Therefore, option E is the correct answer. The other options contain appropriate weak acid and conjugate base or weak base and conjugate acid pairs, making them potential buffer solutions.

When Mixed in Appropriate Amounts,each of the Following Mixtures Can