MCQ
Given below are two statements :

Statement $I$: $\mathrm{S}_8$ solid undergoes disproportionation reaction under alkaline conditions to form $\mathrm{S}^{2-}$ and $\mathrm{S}_2 \mathrm{O}_3{ }^{2-}$

Statement $II$: $\mathrm{ClO}_4^{-}$can undergodisproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below :

  • Statement $I$ is correct but statement $II$ is incorrect.
  • B
    Statement $I$ is incorrect but statement $II$ is correct 
  • C
     Both statement $I$ and statement $II$ are incorrect
  • D
    Both statement $I$ and statement $II$ are correct

Answer

Correct option: A.
Statement $I$ is correct but statement $II$ is incorrect.
a
$\mathrm{S}_1: \mathrm{S}_{\mathrm{8}}+12 \mathrm{OH}^{\ominus} \rightarrow 4 \mathrm{~S}^{2-}+2 \mathrm{~S}_2 \mathrm{O}_3^{2-}+6 \mathrm{H}_2 \mathrm{O}$

$\mathrm{S}_2: \mathrm{ClO}_4^{\ominus}$ cannot undergo disproportionation reaction as chlorine is present in it's highest oxidation state.

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