Which of the Following Acids (Listed with K_a Values)and Their

question 57

Multiple Choice

Which of the following acids (listed with K_a values) and their conjugate base would form a buffer with a pH of 2.34?

• A) C₆H₅COOH, K_a = 6.5 × 10^-5
• B) HIO₃, K_a = 1.7 × 10^-1
• C) HClO, K_a = 2.9 × 10^-8
• D) HF, K_a = 3.5 × 10^-4
• E) HClO₂, K_a = 1.1 × 10^-2