Which one of the following is the weakest acid?
A、HF (Ka = 6.8 × 10-4)
B、HClO (Ka = 3.0 × 10-8)
C、HNO2 (Ka = 4.5 × 10-4)
D、HCN (Ka = 4.9 × 10-10)
E、Acetic acid (Ka = 1.8 × 10-5)
发布时间：2025-01-28 03:27:47
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答案：HCN (Ka = 4.9 × 10-10)
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