In order to oxidize a mixture of one mole of each of , , and in acidic medium, the number of moles of is:

Question

In order to oxidize a mixture of one mole of each of , ,  and  in acidic medium, the number of moles of  is:

Canvas Classes · Accepted Answer

Electrons lost per mole of each compound:

| Compound |  |  | Total e⁻ |
|---|---|---|---|
|  (1 mol) | 1e⁻ | 2e⁻ | 3 |
|  (1 mol) | 0 (Fe³⁺ already) | e⁻ | 6 |
|  (1 mol) | 1e⁻ | 0 | 1 |
|  (1 mol) | 0 (Fe³⁺ already) | 0 | 0 |

Total electrons lost:  mol e⁻

Moles of  (n-factor = 5 in acid):

Answer: Option (2) — 2

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