Which of the following could be added to a solution of potassium fluoride to prepare a buffer?
A) ammonia
B) hydrochloric acid
C) sodium hydroxide
D) sodium fluoride
E) potassium acetate

Question

Quizplus · Accepted Answer

Potassium fluoride (KF) contains the fluoride ion (F-), which can act as a weak base. Adding hydrochloric acid (HCl) will provide H+ ions that can react with F- to form HF, a weak acid, thus creating a buffer system of HF/F-.

Which of the Following Could Be Added to a Solution