MHT CET202521 Apr 2025Evening ShiftChemistryRedox ReactionsActual
Identify correct statement for the reaction. I ₂+ KClO ₃ ICl + KIO ₃
Options
- AI ₂ is an oxidising agent
- BKClO ₃ is Reducing agent
- COxidation number of 'Cl' decreases by 6
- 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