What happens when ammonium hydroxide and copper II bromide are combined?

Ammonium hydroxide (NH₄OH) is a clear liquid, while copper (II) bromide (CuBr₂) is a translucent blue liquid. When these two chemicals are combined, the following reaction takes place:
NH_4OH + CuBr_2 -> NH_4Br + Cu(OH)_2
In this reaction, the products are ammonium bromide (NH₄Br) and copper (II) hydroxide (Cu(OH₂)). The resulting solution is cloudy blue in color, and a blue precipitate is also observed. The precipitate is copper (II) hydroxide.
This reaction is a double-displacement reaction, in which both the species on the reactant side exchange their cations and anions with each other.
The above equation is not yet balanced. To balance it, count the number of atoms of each element on both sides of the chemical equation carefully, and ensure that they are the same on the reactant and product sides.
The balanced chemical reaction for the given scenario is:
2NH_4OH + CuBr_2 -> 2NH_4Br + Cu(OH)_2
Hope this helps.