Which of the Following Is the Weakest Acid

question 48

Multiple Choice

Which of the following is the weakest acid?

• A) HF (K_a for HF is 7.2 × 10^-4)
• B) HCN (K_a for HCN is 4.9 × 10^-10)
• C) HCNO (K_a for HCNO is 2 × 10^-4)
• D) H₃BO₃ (Ka for H₃BO₃ is 5.4 × 10^-10)

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