Which of the following could be paired with hydrofluoric acid, HF, to create a buffer solution:

Question

Quizplus · Accepted Answer

A buffer solution is a solution that resists changes in pH when a small amount of acid or base is added to it. Buffer solutions are made up of a weak acid and its conjugate base, or a weak base and its conjugate acid. In this case, hydrofluoric acid (HF) is a weak acid, so we need to pair it with its conjugate base, which is fluoride ion (F-). Therefore, the correct answer is D) All of the above, because NaF, KF, and CaF2 all contain fluoride ions.

Which of the Following Could Be Paired with Hydrofluoric Acid