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MHT CET202521 Apr 2025Evening ShiftChemistryRedox ReactionsActual

Identify correct statement for the reaction. I ₂+ KClO ₃ ICl + KIO ₃

Options

  1. AI ₂ is an oxidising agent
  2. BKClO ₃ is Reducing agent
  3. COxidation number of 'Cl' decreases by 6
  4. DOxidation number of I increases by 2

Correct answer

C. Oxidation number of 'Cl' decreases by 6

Step-by-step solution

Oxidation state analysis: In I ₂ , iodine is elemental with oxidation state 0. For KClO ₃ , oxygen is -2 and potassium is +1 , requiring chlorine at +5 to balance: +1 + x + 3(-2) = 0 gives x = +5 . In product ICl , chlorine ( -1 ) implies iodine at +1 . In KIO ₃ , potassium +1 and oxygen -2 require iodine at +5 : +1 + z + 3(-2) = 0 gives z = +5 . Iodine is oxidized from 0 to +1 (increase of 1) and +5 (increase of 5), making I ₂ the reducing agent. Chlorine is reduced from +5 to -1 (decrease of +5 - (-1) = 6 ), maki

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