The equation Al2S3 + 18NH4OH -> 2(NH4)3Al(OH)6 + 3H2S

1. Detailed information about the equation Al₂S₃ + 18NH₄OH -> 2(NH₄)₃Al(OH)₆ + 3H₂S:

In the above chemical equation, ammonium hydroxide (NH₄OH) reacts with aluminum sulfide (Al₂S₃) to produce aluminum ammonium (NH₄)₃Al(OH)₆ and hydrogen sulfide (H₂S).

2. Reaction conditions:

This reaction occurs when the reactants come into contact with each other, usually under normal temperature and pressure conditions.

3. Reaction process:

When aluminum sulfide and ammonium hydroxide are combined, a chemical reaction occurs producing aluminum ammonium and hydrogen sulfide. This is a replacement reaction, meaning that the elements or groups of elements of the two reactants are exchanged with each other to form new products.

4. Occurrences:

When the reaction occurs, the ammonia group of ammonium hydroxide is exchanged with the sulfide group of aluminum sulfide, resulting in the formation of aluminum ammonium and hydrogen sulfide. Hydrogen sulfide is a pale yellow gas with a distinct foul odor.