1. H3O+ and H2F+, respectively.
2. OH– and H2F+, respectively.
3. H3O+ and F–, respectively.
4. OH– and F–, respectively.
Which of the following cannot act both as a Bronsted acid and as a Bronsted base?
1. \(\mathrm{H C O_{3}^{-}}\)
2. \(\mathrm{NH_3}\)
3. \(\mathrm{HCl}\)
4. \(\mathrm{H S O_{4}^{-}}\)