NH3+H2O↔NH+4+OH−
Conjugate Acid-Base =(H2O,OH−)and(NH+4,NH3)
A conjugate acid, within the Brønsted–Lowry acid–base theory, is a species formed by the reception of a proton (H+) in a chemical reaction. Hence, a conjugate base is a species formed by the removal of a proton from an acid.
In summary, this can be represented as the following chemical reaction:
Acid + Base ⇌ Conjugate Base + Conjugate Acid