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  4. The oxidation state of S in H2S2O8 is

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Q. The oxidation state of $S$ in $ H_{2}S_{2}O_{8} $ is

AFMCAFMC 2007

Solution:

The chemical structure of
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Let the oxidation number of is $ 'x' $
image
$2 + 2x - 1 2 - 2 = 0 $
$2x = 12$
$ x = +6$