Write the reaction equation: Fe → FeS → H2S → S → H2S → Na2S → S

1) Fe + S = FeS↓;

2) FeS↓ + H₂SO₄ = FeSO₄+ H₂S↑;

FeS↓ + 2H+ + SO₄2- = Fe2+ + SO₄2-+ H₂S↑;

FeS↓ + 2H= Fe2+ + H₂S↑;

3) 2H₂S↑ + SO₂↑ = 3S↓+ 2H₂O;

4) S + H₂ = H₂S↑;

5) H₂S↑ + 2NaOH = Na₂S + 2H₂O;

H₂S↑ + 2Na+ 2OH– = 2Na+ S2- + 2H₂O;

H₂S↑ + 2OH– = S2- + 2H₂O;

6) Na₂S + Cl₂ = 2NaCl + S↓.



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