This sulphate reacts differently with iodine and bromine in the reaction given below 2S2O3-2+I2→S4O6-2+2I-1
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a
Bromine is stronger oxidant than iodine
b
Bromine is weaker oxidant than iodine
c
Thisulphate undergoes oxidation by bromine and reduction by iodine in these reaction
d
Bromine undergoes oxidation and iodine undegoes reduction in these reactions
answer is A.
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Detailed Solution
2S2+2O22--2(aq)+I20(s)→S42.5O62-(aq)+2I-(aq)S2+2O32--2(aq)+2B0r2(l)+5H2O(l)→2S+6O42-2-(aq)+4Br-(aq)+10H+(aq)Bromine being stronger oxidising agent than I2, Br2 oxidises S of S2O32- to SO42- whereas I2 oxidises it only into S4O62- ion.