Question

what happens when sulphur dioxide is passed through an aqueous solution of Fe3 salt​

Answer 1

It reduces Fe3 salt to Fe2 salt

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Answer 2

Answer:

Step-by-step explanation:

SO2 acts as a reducing agent when passed through an aqueous solution containing Fe(III) salt. It reduces Fe(III) to Fe(II) i.e., ferric ions to ferrous ions.

2Fe3+ + SO2 + 2H2O → 2Fe2+ + SO42- + 4H+