Explanation:
According to Bronsted-Lowry, acids are the species that give hydrogen ions whereas bases are the species that accept hydrogen ions.
A base on accepting a hydrogen ion results in the formation of conjugate acid. On the other hand, an acid on donating hydrogen ion results into the formation of a conjugate base.
For example, [tex]HClO_{3} + NH_{3} \rightarrow NH^{+}_{4} + ClO^{-}_{3}[/tex]
Here, [tex]HClO_{3}[/tex] is the acid, [tex]NH_{3}[/tex] is the base, [tex]NH^{+}_{4}[/tex] is the conjugate acid and [tex]ClO^{-}_{3}[/tex] is the conjugate base.
Therefore, we can conclude that in the given chemical reaction [tex]NH_{3}[/tex] and [tex]NH^{+}_{4}[/tex] is the base-conjugate acid pair.
