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An aqueous solution of a gas 'A ' gives ...

An aqueous solution of a gas 'A ' gives the following reactions along with same observations:
It decolorises pink coloured acidified `KMnO_(4)` solution.

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These observations suggest that the gas A is sulphur dioxide `(SO_(2))` . The reaction involved are as follows.
`2KMnO_(4) + underset("(A)")(5SO_(2))underset("(colourless)(colourless)")(K_(2)SO_(4) + 2MnSO_(4)) + 2H_(2)SO_(4)`
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CHHAYA PUBLICATION-P-BLOCK ELEMENTS-SHORT ANSWER TYPE (SA)
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