Question

In the reaction $S_8 + 12 \, OH^{-} \rightarrow 4 S^{2-} + 2 S_2O^{2-}_3 + 6 H_2O$ $S$ has undergone oxidation and reduction. Which of the following statement is true ?

• A. In $S^{2-}$, sulphur has been oxidised and in $S_2O^{2-}$, sulphur has been reduced.
• B. In $S^{2-}$ , sulphur has been reduced and in $S_2O^{2-}_3$ sulphur has been oxidised as well as reduced.
• C. In both $S^{2-}$ and $S_2O^{2-}_3$, sulphur has been oxidised.
• D. In both $S^{2-}$ and $S_2O^{2-}_3$ ions, sulphur has been reduced.

Answer 1

Answer: (B)

Correct answer is (b) In $S^{2-}$ , sulphur has been reduced and in $S_2O^{2-}_3$ sulphur has been oxidised as well as reduced.