Iron reduce silver cations.
as silver nitrate reacts with iron(AgNO3+Fe gives FeNO3+Ag)(decomposition reaction).
The chemical reaction is;3 NH4OH + Fe(NO3)3 = 3 NH4NO3 + Fe(OH)3 (precipitate)
ferric nitrate
Fe(NO3)3+3NaOH--->Fe(OH)3+3NaNO3
Ferric Chloride forms hexa-aquacomplexes in water (water hydrates it). So yes it is soluble.
AL(OH)3 + 3HNO3 = AL(NO3)3 + 3H2O pinkey