Answer:
NH3 + H2O → NH4+ + OH-
Step-by-step explanation:
Ammonia, NH3 can act as a base in water (H2O), which serves as the acid, as follows;
NH3 (aq) + H2O (l) → NH4OH (aq)
According to Bronsted–Lowry acid–base theory, NH4+ (ammonium) is the conjugate acid because it can lose hydrogen ion to form the base while OH- is the conjugate base because it can gain hydrogen ion to form the acid. The balanced ionic equation is as follows;
NH3 + H2O → NH4+ (aq) + OH- (aq)