Cr -> Cr₂O₃2 Cr + 3 O₂ -> 2 Cr₂O₃
Cr₂O₃ -> Cr₂(SO₄)₃Cr₂O₃ + 3 H₂SO₄ -> Cr₂(SO₄)₃ + 3 H₂O
Cr₂(SO₄)₃ -> K₂Cr₂O₇K₂Cr₂O₇ + Cr₂(SO₄)₃ + H₂O -> 2 K₂SO₄ + Cr₂O₃
K₂Cr₂O₇ -> K₂Cr₂O₄K₂Cr₂O₇ -> K₂Cr₂O₄ + O₂
Cr -> Cr₂O₃
2 Cr + 3 O₂ -> 2 Cr₂O₃
Cr₂O₃ -> Cr₂(SO₄)₃
Cr₂O₃ + 3 H₂SO₄ -> Cr₂(SO₄)₃ + 3 H₂O
Cr₂(SO₄)₃ -> K₂Cr₂O₇
K₂Cr₂O₇ + Cr₂(SO₄)₃ + H₂O -> 2 K₂SO₄ + Cr₂O₃
K₂Cr₂O₇ -> K₂Cr₂O₄
K₂Cr₂O₇ -> K₂Cr₂O₄ + O₂