When acetic acid reacts with ammonia, nh3, the reaction yields

Acetamide

Explanation:

The reaction can be expressed as:

CH₃COOH + NH₃ → CH₃CONH₂ + H₂O

It's worth mentioning that this reaction would have a better yield if we use an appropiate catalyst such as DCC, in order to prevent an acid-base reaction and instead have the previous amidation reaction.

it is the most commonly accepted one