Why dry `SO_2` cannot bleach dry flowers ? – InterviewSolution

InterviewSolution

1.	Why dry `SO_2` cannot bleach dry flowers ?
Answer» `SO_(2)` acts as a bleaching agen only in the presence of moisture, as the nascent hydrogen which is responsible for bleaching is produced. `SO_(2) + H_(2) O rarr H_(2) SO_(4) + 2[H]` Coloured flower `+ [H] rarr` colourless flower.

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