Consider the redox reaction as represented by the following equation: 12(aq) + 2S2O32-(aq) → 21-(aq) + S4O62-(aq). Which of the species in the equation is reduced?
a
S4O62-(aq)
b
S4O32-(aq)
c
12(aq)
d
1-(aq)
Explanation
Correct Option
cNo explanation available
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TheLivingLegend01
3 years ago
The correct answer is C. I_{2}(aq).
In this reaction, I_{2} is reduced from an oxidation state of 0 to -1. This is because it gains electrons from the thiosulfate ion, S_{2}O_{3}^{2-}. The thiosulfate ion is oxidized from an oxidation state of +2 to +3.
The other options are not correct. S_{4}O_{6}^{2-} is not reduced in this reaction. It is the product of the oxidation of S_{2}O_{3}^{2-}. S_{4}O_{3}^{2-} is not a species in this reaction. I^{-} is not reduced in this reaction. It is the product of the reduction of I_{2}.





