Net ionic equation for NaOH (aq) + NH4Br (aq) - > NaBr (aq) + NH3 (g) + H2O (l)

OH⁻ (aq) + NH₄⁺ (aq) → NH₃ (g) + H₂O (l)

Explanation:

The net ionic equation is a way yo write a chemical equation that list only the species that are involved in the reaction.

For the reaction:

NaOH (aq) + NH₄Br (aq) → NaBr (aq) + NH₃ (g) + H₂O (l)

Ionic equation is:

Na⁺ (aq) + OH⁻ (aq) + NH₄⁺ (aq) + Br⁻ (aq) → Na⁺ (aq) + Br⁻ (aq) + NH₃ (g) + H₂O (l)

-Ions comes from the species that are in aqueous phase-

And net ionic equation is:

OH⁻ (aq) + NH₄⁺ (aq) → NH₃ (g) + H₂O (l)