Chemistry, asked by urvishalalwani, 1 year ago

When sulphur dioxide is passed in an acidified potassium dichromate solution,the oxidation state of sulphur is changed from ?

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Answered by CBSEMP

12

Reaction of sulphur dioxide with K2Cr2O7 in acidic medium is given as
3 SO2 + Cr2O72- + 2 H+ →3 SO42- + 2 Cr3+ + H2O

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