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Oxidation of thiosulphate by iodine give...

Oxidation of thiosulphate by iodine gives

A

Sulphide ion

B

tetrathionate ion

C

sulphide ion

D

sulphate ion

Text Solution

Verified by Experts

The correct Answer is:
2
With iodine sodium thiosulphate forms sodium tetrathionate quantitatively:
`2Na_(2)S_(2)O_(3)+I_(2)rarr2NaI+Na_(2)S_(4)O_(6)`
This reaction which is rapid even at room temperature, is used in volumetric analysis for estimating solutions of iodine.
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