Final answer:
The reaction equation for a strong acid (H3O+) added to ammonia (NH3) is H3O+(aq) + NH3(aq) → NH4+(aq) + H2O(l), which represents an acid-base neutralization reaction.
Step-by-step explanation:
The equation for the reaction when a strong acid represented by hydronium ions (H3O+) is added to an ammonia (NH3) solution is:
H3O+ (aq) + NH3(aq) → NH4+ (aq) + H2O(l)
This reaction involves the transfer of a proton from the hydronium ion to the ammonia molecule, forming ammonium ion (NH4+) and water. It is considered an acid-base neutralization reaction, with the ammonia acting as a base and the hydronium ion acting as an acid.