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Question: When thiosulphate ion is oxidised by iodine, which one of the following ion is produced....

When thiosulphate ion is oxidised by iodine, which one of the following ion is produced.

A

SO32−SO_{3}^{2 -}

B

SO42−SO_{4}^{2 -}

C

S4O62−S_{4}O_{6}^{2 -} (Tetrathionate)

D

S2O62−S_{2}O_{6}^{2 -}

Answer

S4O62−S_{4}O_{6}^{2 -} (Tetrathionate)

Explanation

Solution

2Na2S2O3+I2→2NaI+Na2S4O62Na_{2}S_{2}O_{3} + I_{2} \rightarrow 2NaI + Na_{2}S_{4}O_{6}