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Common Oxidation States

If X decolo...

Question

If $(X)$ decolorizes acidified $K M n O_{4}$ solution, then $X$ may be:

S^{2 -}

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S O_{3}^{2 -}

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F e^{2 +}

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S O_{2}

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Solution

The correct options are
A $F e^{2 +}$
B $S O_{2}$
C $S^{2 -}$
D $S O_{3}^{2 -}$
All the species can decolorize $K M n O_{4}$ as they can get easily oxidized, thereby reducing the $M n$ ion to a colorless oxidation state.

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