In a buffer system of HF and its salt,NaF,________. A)the HF neutralizes added acid B)the HF neutralizes added base C)the HF is not necessary D)the neutralizes added H₂O E)the neutralizes added base

Question

Quizplus · Accepted Answer

In a buffer system composed of HF and its salt NaF, the HF acts as a weak acid and the NaF acts as its conjugate base. Therefore, the buffer system can neutralize added base by the HF accepting protons from the base and forming the F- ion. This reaction maintains the pH of the solution in the buffer range. The HF can also act to neutralize added acid by donating a proton to the acid and forming the F- ion, thus maintaining the pH in the buffer range. Therefore, choice B is the best answer.

In a Buffer System of HF and Its Salt,NaF,________