Q.
Thiosulphate reacts differently with iodine and bromine in the reactions given below:
$2S_{2}O^{2-}_{3} + I_{2} \to S_{4}O^{2-}_{6} + 2I^{-}$
$S_{2}O_{3}^{2-} + 2Br_{2} + 5H_{2}O \to 2SO^{2-}_{4} + 2Br^{-} + 10H^{+} $
Which of the following statements justifies the above dual behaviour of thiosulphate?
Redox Reactions
Solution: