Here's how to determine the net ionic equation for the reaction of hypochlorous acid (HClO) and ammonia (NH₃):

1. Write the balanced molecular equation:

HClO(aq) + NH₃(aq) → NH₄ClO(aq)

2. Write the complete ionic equation:

H⁺(aq) + ClO⁻(aq) + NH₃(aq) → NH₄⁺(aq) + ClO⁻(aq)

3. Identify spectator ions:

The ClO⁻ ion appears on both sides of the equation, so it's a spectator ion.

4. Write the net ionic equation:

H⁺(aq) + NH₃(aq) → NH₄⁺(aq)

Therefore, the net ionic equation for the reaction of hypochlorous acid and ammonia is:

H⁺(aq) + NH₃(aq) → NH₄⁺(aq)