For this problem, we are asked which is the weakest acid.
HA (aq) + H2O (l) ⇌ H3O+ (aq) + A- (aq)
Which of the following is the weakest acid?
A. HF (KA for HF is 7.2 x 10-4)
B. H3BO3 (Ka for H3BO3 is 5.4 x 10 -10)
C. HCNO (ka for HCNO is 2 x 10-4)
D. HCN (ka for HCN is 4.9 x 10-10)
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What scientific concept do you need to know in order to solve this problem?
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