Which of the following is the weakest acid?
A) HCN (pKa = 9.31)
B) HIO3 (pKa = 0.77)
C) HF (pKa = 3.45)
D) CH3COOH (pKa = 4.75)
E) HNO2 (pKa = 3.37)
Correct Answer:
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