Question

the number of fe2+ion oxidised by one mole of Mno4- ions is ---- a)1/5,b)2/3,c)5,d)3/2​

Answer 1

$\bold{Answer:-}$

The balanced reaction is as follows:

5Fe+² + KMnO4 →Mn+² + 5Fe+³

+2. . +7. . +2. . +3

➫So, one mole of KMnO4 oxidises 5 mole of ferrous ion.

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Answer 2

Answer:

Explanation:

Here, Fe2+ ion is oxidized to form Fe3+ ion and MnO4- ion is reduced to form Mn2+. The reaction takes place as follows : Based on the above reaction, mole ratio between MnO4– and Fe2+ being 1:5, therefore, 5 moles of Fe2+ need 1 mole of MnO4-.