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Given the standard oxidation potentials, Fe → +   0 .4   V Fe 2+ (aq) → −   0 .8   V Fe 3+ (aq)   [in   acidic   medium] Fe → +   0 .9   V Fe(OH) 2 → 0 .6   V Fe(OH) 3   [in   basic   medium] It is easier to oxidise F e 2 + to F e 3 + in

Options

  1. Aacid medium
  2. Balkaline medium
  3. Cneutral medium
  4. Dboth in acidic and alkaline mediums

Correct answer

B. alkaline medium

Step-by-step solution

E F e 2 + / F e 3 + o , is positive in alkaline medium, hence it is easier to oxidise F e 2 + to F e 3 + in alkaline medium.

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