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Sulphuir dioxide 'SO2' is, a reducing ...

Sulphuir dioxide 'SO_2' is, a reducing agent. Why?

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Ans: In presence of moisture.
0., releases nascent hydrogen. Hence it is acting as a reducing agent. .SO_2+H_2 O rarr H_3 SO_4+2[H].
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V PUBLICATION-The p-BLOCK ELEMENTS-QUESTION BANK
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