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p-Block Elements – II — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12Chemistryp-Block Elements – II2 Marks
Question
How will you prepare sulphurdioxide by laboratory method?
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Answer

Sulphur dioxide is prepared in the laboratory treating a metal or metal sulphite with sulphuric acid.
$Cu +2 H _2 SO _4 \rightarrow CuSO _4+ SO _2+2 H _2 O$
$SO _3^{-}+2 H ^{+} \rightarrow H _2 O + SO _2$

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