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JEE Main20248 Apr 2024Morning ShiftChemistryd and f Block ElementsActual

Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. ( Fe ³⁺ ) oxidises the iodide ion B. ( Fe ³⁺ ) oxidises the persulphate ion C. ( Fe ²⁺ ) reduces the iodide ion D. ( Fe ²⁺ ) reduces the persulphate ion Choose the most appropriate answer from the options given below:

Options

  1. AB only
  2. BA only
  3. CB and C only
  4. DA and D only

Correct answer

D. A and D only

Step-by-step solution

aligned & 2 Fe ³⁺+2 I ⁻ 2 Fe ²⁺+ I ₂ & 2 Fe ²⁺+ S ₂ O ₈²⁻ 2 Fe ³⁺+2 SO ₄²⁻ aligned Fe ⁺³ oxidises I ⁻ to I ₂ and convert itself into Fe ⁺² . This Fe ⁺² reduces S ₂ O ₈ ²⁻ to SO ₄ ²⁻ and converts itself into Fe ⁺³ .

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