FeCl2+2NH3·H2O==Fe(OH)2(沉淀)+2NH4Cl
FeCl3+3NH3·H2O==Fe(OH)3(沉淀)+3NH4Cl
离子方程式为:
Fe2+ + 2NH3.H2O = Fe(OH)2(沉淀) + 2NH4+
Fe3+ + 3NH3.H2O = Fe(OH)3(沉淀) + 3NH4+