In the following buffer system, what happens to the concentration of the highlighted molecule if you add base (OH^-)? HF + NaF + H₂O ⇌ F^- + H₃O⁺^{+ Na+} A)increases B)decreases C)stays the same D)Buffers do not change. E)none of the above

Question

Quizplus · Accepted Answer

The highlighted molecule is H₃O, which is the conjugate base of HF in the buffer system. When a base (OH^-) is added, it will react with the acidic proton of HF, shifting the equilibrium towards the products (F^- and H₃O). Consequently, the concentration of the highlighted molecule (H₃O) will decrease, resulting in a decrease in the buffer capacity of the system. Hence, the correct answer is B.

In the Following Buffer System, What Happens to the Concentration