1) S + H₂ = H₂S
2) H₂S + 2O₂ = SO₃ + H₂O
3) SO₃ + H₂O = H₂SO₄
4) H₂SO + Cu(OH)₂ = CuSO₄ + H₂O
5) CuSO₄ = CuO + SO₂ + O₂
6) SO₂ + 2C = 2CO + S
1) S + H₂ = H₂S
2) H₂S + 2O₂ = SO₃ + H₂O
3) SO₃ + H₂O = H₂SO₄
4) H₂SO + Cu(OH)₂ = CuSO₄ + H₂O
5) CuSO₄ = CuO + SO₂ + O₂
6) SO₂ + 2C = 2CO + S