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Thiosulphate reacts differently with iodine and bromine in the reactions given below: 

2S2O32– + I2 → S4O62– + 2I– S2O32–+ 2Br2 + 5H2O → 2SO42– + 2Br– + 10H

Which of the following statements justifies the above dual behaviour of thiosulphate?

(i) Bromine is a stronger oxidant than iodine.

(ii) Bromine is a weaker oxidant than iodine.

(iii) Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.

(iv) Bromine undergoes oxidation and iodine undergoes reduction in these reactions.

0 1 View | Posted 4 months ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    4 months ago

    This is a Multiple Choice Questions as classified in NCERT Exemplar

    Option (i) is the correct answer.

    Standard reduction potential of bromine is higher than Iodine, hence Bromine is a stronger oxidant than iodine.

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