i.

1. HCl
2. H₃O⁺
3. Cl₃CCO₂H
4. FCH₂CO₂H
5. C₆H₅CO₂H
6. CH₃CO₂H
7. p-NO₂C₆H₄NH₂
8. CH₃SH
9. H₂CO₃
10. HCO₂H