4Fe+3O²=2Fe²O³
Fe²O³+3 H²SO⁴= Fe²(SO⁴)³+3 H²O
Fe²(SO⁴)³+6NaOH= 2Fe(OH)³+3 Na²SO⁴
2Fe(OH)³= Fe²O³+3H²O
Fe²O³+6HNO³= 2Fe(NO³)³+ 3H²O
Fe(NO³)³+3KOH= Fe(OH)³+3 KNO³
4Fe+3O²=2Fe²O³
Fe²O³+3 H²SO⁴= Fe²(SO⁴)³+3 H²O
Fe²(SO⁴)³+6NaOH= 2Fe(OH)³+3 Na²SO⁴
2Fe(OH)³= Fe²O³+3H²O
Fe²O³+6HNO³= 2Fe(NO³)³+ 3H²O
Fe(NO³)³+3KOH= Fe(OH)³+3 KNO³