A-->FeS-->H2S-->SO2-->H2SO3-->SO2 Помогите

Question

A-->FeS-->H2S-->SO2-->H2SO3-->SO2
Помогите

Answer 1

1. S + Fe = FeS
2. FeS + 2HCl = H₂S + FeCl₂
3. 2H₂S + 3O₂ = 2SO₂ + 2H₂O
4. SO₂ + H₂O = H₂SO₃
5. H₂SO₃ = SO₂ + H₂O

Answer 2

Fe+s=FeS
FeS+2HCl=FeCl2+H2S
H2S+O3=SO2+H2O
SO2+2HOH=H2SO3+H2O
H2SO3=H2O+SO2