Multiple Choice
Which of the following is the weakest acid?
A) HF (Ka for HF is 7.2 × 10-4)
B) HCN (Ka for HCN is 4.9 × 10-10)
C) HCNO (Ka for HCNO is 2 × 10-4)
D) H3BO₃ (Ka for H3BO₃ is 5.4 × 10-10)
Correct Answer:

Verified
Correct Answer:
Verified
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