The following chart depicts the ionization constants (Ka) for a number of weak acids. If you had a 1.0-molar solution of each acid, which would have the highest pH?

Acid
Ka
HSO2
1.2 X 10–2
HNO2
4.0 X 10–4
HF
7.2 X 10–4
HOCl
3.5 X 10–8
HCN
6.2 X 10–10

HSO2
HNO2
HF
HOCl
HCN