posted by Fiona on .
I'm trying to work out the equation for when ammonia solution is added to zinc hydroxide solution. I think a precipitate forms.
[Zn(OH)4]2- + NH3(aq) + H2O(l) --> ????
Zn(OH)2 + 4NH3 ==> Zn(NH3)4(OH)2
The Zn(OH)2 forms a soluble complex ion with NH3.