4Fe + 3O2 = 2Fe2O3
Fe2O3 + 3H2O = 2Fe ( OH ) 3
2Fe + O2 = 2FeO
FeO + H2O = Fe ( OH ) 2
1) 1. 4Fe + 3O2 = 2Fe2O3
2.Fe2O3 + 6HCl = 2FeCl3 + 3H2O
FeCl3 + 2NaOH = Fe(OH)2↓ + 2NaCl
t
2) 1. Fe + H2O = FeO + H2↑
2. FeO + 2HCl = FeCl2 + H2O
FeCl2 + 2NaOH = 2NaCl + Fe(OH)2
4Fe + 3O2 = 2Fe2O3
Fe2O3 + 3H2O = 2Fe ( OH ) 3
2Fe + O2 = 2FeO
FeO + H2O = Fe ( OH ) 2
1) 1. 4Fe + 3O2 = 2Fe2O3
2.Fe2O3 + 6HCl = 2FeCl3 + 3H2O
FeCl3 + 2NaOH = Fe(OH)2↓ + 2NaCl
t
2) 1. Fe + H2O = FeO + H2↑
2. FeO + 2HCl = FeCl2 + H2O
FeCl2 + 2NaOH = 2NaCl + Fe(OH)2