The number of mole of \( \mathrm{KMnO}_{4} \) that will be needed to react completely with one m...

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The number of mole of \( \mathrm{KMnO}_{4} \) that will be needed to react completely with one mole of ferrous oxalate in acidic solution is :
(A) \( 3 / 5 \)
(B) \( 2 / 5 \)
(C) \( 4 / 5 \)
(D) 1
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