How SO2 reacts with ferric ion and molecular halogens? – InterviewSolution

1.

How SO2 reacts with ferric ion and molecular halogens?

Answer»

(i) It reduces ferric salts to ferrous salts, and 2Fe³⁺ + SO₂ + 2H₂O → 2Fe²⁺ + SO₄^2- + 4H⁺ Ferric Sulphurdioxide ferrous salt

(ii) it reduces halogens to halogen acids.

X₂ + SO₂ + 2H₂O → SO₄^2- + 2X^- + 4H⁺ Halogen Sulphur water halogen acid

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