Fe(oh)3----fe2(so4)3----feohso4----fe2(so4)3----(fe(oh)2)2so4

Question

Fe(oh)3----fe2(so4)3----feohso4----fe2(so4)3----(fe(oh)2)2so4

Answer 1

Fe(OH)3+H2SO4=FeOHSO4+2H2O
2FeOHSO4+H2SO4=Fe2(So4)3+2H2O
Fe2(So4)3+2Na3PO4=2FePO4+3Na2SO4(насчет этой не уверен)