Question

State what do you observe when:- Ammonium hydroxide is added to iron $\left[III\right]$ sulphate solution.

Answer 1

Iron (III) sulphate + ammonium hydroxide gives iron (III) hydroxide and ammonium sulphate.
A reddish-brown precipitate is observed and $Fe(OH{)}_3$ is insoluble in excess aq. ammonia/ammonium hydroxide.