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JEE Advanced levelSingle correct optionDifficulty 3 of 3ph043

Iodine reacts with hot concentrated nitric acid to give iodic acid, , and nitrogen dioxide. How many moles of are formed per mole of oxidised?

  1. A10
  2. B2
  3. C5
  4. D6

Answer: A

Each I goes from 0 to +5, so one loses 10 electrons. Each N goes from +5 to +4 in , gaining 1 electron. So 10 are formed: .
Practice p-Block Elements: Groups 17 and 18 More on Halogen compounds: HX, oxoacids, bleaching powder

More questions on Halogen compounds: HX, oxoacids, bleaching powder