Textbook Problem

Describe the relationship between a conjugate acid-base pair in the Brønsted-Lowry model. Write balanced chemical equations showing the following molecules/ions behaving as Bronsted-Lowry acids in water: HCl, H₂SO₄. H₃PO₄, ${\text{NH}}_{\text{4}}{}^{-}$. Write balanced chemical equations showing the following molecules/ions behaving as Brønsted-Lowry bases in water: NH₃, ${\text{HCO}}_{\text{3}}{}^{-}$, ${\text{NH}}_{\text{2}}{}^{-}$, ${\text{H}}_{\text{2}}{\text{PO}}_{\text{4}}{}^{-}$.