Write the reaction equations: FeCl3 ↑ ↓ Fe → Fe2 (SO4) 3 → Fe (OH) 3 ↓ ↑ Fe (NO3) 3

Fe(OH)3 + 3HCl = FeCl3 + 3H2O, FeCl3 + 3KOH = Fe(OH)3↓+ 3KCl
2Fe + 6H2SO4 = Fe2(SO4)3 + 3SO2 + 6H2O
Fe2(SO4)3 + 6NaOH = 2Fe(OH)3 + 3Na2SO4
Fe+4HNO3=Fe(NO3)3+2H2O+NO, Fe(NO3)3 + 3KOH = Fe(OH)3 + 3KNO3



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