Does aluminum foil react with ammonia?

Answer 1

Yes, aluminum reacts with ammonia to produce aluminum hydroxide and hydrogen gas. While most aluminum quickly acquires a coating of aluminum oxide, protecting it from corrosion, aqueous ammonia is able to get past this protective oxide layer and corrode the aluminum.

Here is the chemical equation:

Al3+ (aq) + 3NH3 (aq) + 3H2O(aq) --> Al(OH)3 (s) + 3NH4+ (aq)

...and, you also have this reaction resulting in the production of some hydrogen gas:

2NH4+(aq) --> 2NH3 + H2 (g)