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

Conjugate acids: `H_(3)O^(o+), H_(2)CO_(3), H_(2)SO_(4)`
Conjugate bases: `overset(Θ)(O)H, CO_(3)^(2-), SO_(4)^(2-)`