Chemistry · Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number and balancing of redox reactions

Which of the following compound cannot be oxidised by

Which of the following compound cannot be oxidised by \( \boldsymbol{O}_{3} ? \)

  • A. \( K I \)
  • B. \( K M n O_{4} \)
  • C. \( K_{2} \) Мп \( O_{4} \)
  • D. \( F e S O_{4} \)

Step-by-step solution

KMnO4 contains manganese in its highest oxidation state (+7), so it cannot be further oxidized. Ozone (O3) is a strong oxidizing agent but cannot oxidize Mn from +7 to a higher state. In contrast, KI (I- to I2), K2MnO4 (Mn+6 to Mn+7), and FeSO4 (Fe2+ to Fe3+) can be oxidized by O3.
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