Which of the following acids is the best acid to prepare a buffer with the highest pH? A) C₅H₅O₅COOH, K_a = 4.0 × 10^-6 B) HOC₆H₄OCOOH, K_a = 1.0 × 10^-3 C) HBrO, K_a = 2.3 × 10^-9 D) C₆H₄(COOH)₂, K_a = 2.9 × 10^-4 E) CH₃COOH, K_a = 1.8 × 10^-5

Question

Quizplus · Accepted Answer

The best acid for preparing a buffer with the highest pH is the one with the weakest acid strength, indicated by the highest $K_a$ value. Among the given options, HBrO with a $K_a$ of $2.3 \times 10^{-9}$ is the weakest acid, thus it would form a buffer with the highest pH.

Which of the Following Acids Is the Best Acid to Prepare