An aqueous solution containing an equal number of moles of NaF and HF is an example of a buffer solution.

Name: An aqueous solution containing an equal number of moles of NaF and HF is an example of a buffer solution.
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This solution is a buffer because it contains a weak acid (HF) and its conjugate base (F- from NaF), which allows it to resist changes in pH when small amounts of acid or base are added.

An Aqueous Solution Containing an Equal Number of Moles of NaF