Which One of the Following Is the Weakest Acid

question 75

Multiple Choice

Which one of the following is the weakest acid?

• A) HCN (K_a = 4.9 × 10^{- 10})
• B) Acetic acid (K_a = 1.8 × 10^{- 5})
• C) HF (K_a = 6.8 × 10^{- 4})
• D) HNO₂ (K_a = 4.5 × 10^{- 4})
• E) HClO (K_a = 3.0 × 10^{- 8})

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