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JEE Main202431 Jan 2024Evening ShiftChemistryRedox ReactionsActual

Given below are two statements : Statement I: S 8 solid undergoes disproportionation reaction under alkaline conditions to form S 2 − and S 2 O 3 2 − Statement II: ClO 4 − can undergo disproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below:

Options

  1. AStatement I is correct but statement II is incorrect.
  2. BStatement I is incorrect but statement II is correct
  3. CBoth statement I and statement II are incorrect
  4. DBoth statement I and statement II are correct

Correct answer

A. Statement I is correct but statement II is incorrect.

Step-by-step solution

A disproportionation reaction is a reaction in which the same element is simultaneously oxidized and reduced. In this type of reaction, a single substance gives two products, one is oxidized while the other is reduced. S 1 : S 8 + 12 OH ⊝ → 4 S 2 − + 2 S 2 O 3 2 − + 6 H 2 O S 2 : ClO 4 ⊝ cannot undergo disproportionation reaction as chlorine is present in its highest oxidation state. Hence, statement I is correct and II is incorrect.

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