Question

how many moles of acidified feso4 can be completely oxidised by one mole of kmno4

Answer 1

Answer: -

5 moles of acidified FeSO₄ can be completely oxidized by one mole of KMnO₄

Explanation: -

KMnO₄ is an oxidizing agent. It will oxidize the FeSO₄.

In acidic medium there would be H⁺.

The products will be Mn²⁺ , H₂O and Fe³⁺.

The balanced ionic equation for the reaction of acidified FeSO₄ with KMnO₄ is

MnO₄⁻ + 8 H⁺ + 5 Fe²⁺ → Mn²⁺ + 4H₂O + 5 Fe³⁺

From the balanced ionic equation we see that 5 moles of Fe²⁺ can be oxidized by 1 mole of MnO₄⁻ .

Since each 1 mole of MnO₄⁻is obtained from 1 mole of KMnO₄ and 1 mole of Fe²⁺ is obtained from 1 mole of FeSO₄,

5 moles of acidified FeSO₄ can be completely oxidized by one mole of KMnO₄