The species: `H_(2)O, HCO_(3)^(Θ), HSO_(4)^(Θ)` and `NH_(3)` can act both as Bronsted acids and bases. For each case give the corresponding conjugate acid and base.

Explanation

The table below lists the conjugate acids and conjugate bases for the given species.
`{:("Species",,"Conjugate acid",,"Conjugate acid"),(H_(2)O,,H_(3)O^(+),,OH^(-)),(HCO_(3)^(-),,H_(2)CO_(3),,CO_(3)^(2-)),(HSO_(4)^(-),,H_(2)SO_(4),,SO_(4)^(2-)),(NH_(3),,NH_(4)^(+),,NH_(2)^(-)):}`