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NTA Abhyas JEE Main2020Chemistryd and f Block ElementsPractice

Which of the following reaction does not occur spontaneously?

Options

  1. AF e + 3 + C d → C d + 2 + F e + 2
  2. BFe + 3 + I − → Fe + 2 + I 2
  3. CFe +2 + MnO 4 − → H + Fe +3 + Mn +2
  4. DF e + 3 + C e + 3 → F e + 2 + C e + 4

Correct answer

D. F e + 3 + C e + 3 → F e + 2 + C e + 4

Step-by-step solution

C e + 4 is a strong oxidising agent so the reverse reaction takes place C e + 4 + F e + 2 → C e + 3 + F e + 3

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