Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of

Question

Acidified K₂Cr₂O₇ solution turns green when Na₂SO₃ is added to it. This is due to the formation of

Cr₂(SO₄)₃

CrO$_4^{2 - }$

Cr₂(SO₃)₃

CrSO₄

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