When thiosulphate ion is oxidized by iodine, the new product $X$ is formed. How many S-S linkage is/are present in X?

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Solution

When thiosulphate ion is oxidized by iodine, the new product formed is $S_{4} O_{6}^{2 -}$ . It contains $3 S - S$ linkages.

Reaction: $S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + I^{-}$

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