K₂Cr₂O₇ + 7 H₂SO₄ + 6 KI ---->4 K₂SO₄ + Cr₂(SO₄)₃ + 3 I₂ + 7 H₂O
2Cr(+VI) + 6e ---->2Cr(+III)
6 I(-I) - 6e ---->3 I₂(0)
Tym gazem jest jod.
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K₂Cr₂O₇ + 7 H₂SO₄ + 6 KI ---->4 K₂SO₄ + Cr₂(SO₄)₃ + 3 I₂ + 7 H₂O
2Cr(+VI) + 6e ---->2Cr(+III)
6 I(-I) - 6e ---->3 I₂(0)
Tym gazem jest jod.