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Types of Redox Reactions

In order to o...

Question

In order to oxidize a mixture of one mole of each of $F e C_{2} O_{4}$ , $F e_{2} (C_{2} O_{4})_{3}$ , $F e S O_{4}$ , and $F e_{2} (S O_{4})_{3}$ in acidic medium, the number of moles of $K M n O_{4}$ required is:

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1.5

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Solution

The correct option is C 2
n-factor of $K M n O_{4} = 5$
n-factor of $F e S O_{4} = 1$
n-factor of $F e C_{2} O_{4} = 3$
n-factor of $F e_{2} (C_{2} O_{4})_{3} = 6$
$F e_{2} (S O_{4})_{3}$ does not react.
We know,
$n_{e q} K M n O_{4} = n_{e q} [F e C_{2} O_{4} + F e_{2} (C_{2} O_{4})_{3} + F e S O_{4}$
Let the number of moles of $K M n O_{4}$ required be x, then
$5 x = 1 \times 3 + 1 \times 6 + 1 \times 1$
$\Rightarrow x = 2$

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Similar questions

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