3H₂S + K₂Cr₂O₇ + 4H₂SO₄ = 3S + Cr₂(SO₄)₃ + K₂SO₄ +7H₂O
2Cr⁺⁶ + 6e⁻= 2Cr⁺₃ 1
S⁻² + 2e⁻ = S⁰ 3
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3H₂S + K₂Cr₂O₇ + 4H₂SO₄ = 3S + Cr₂(SO₄)₃ + K₂SO₄ +7H₂O
2Cr⁺⁶ + 6e⁻= 2Cr⁺₃ 1
S⁻² + 2e⁻ = S⁰ 3