Q.

When I2 oxidizes S2O3-2 , the average oxidation number of Sulphur in the product formed is

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a

+6

b

+4

c

+2

d

+2.5

answer is D.

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Detailed Solution

2S2O3-2+I2→S4O6-2+2I-Oxidation state of S = +5,0,0,+5Average oxidation state =5+0+0+54=2.5
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