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…

In order to oxidize a mixture of one mole of each of FeC2O4,Fe2(C2O4)3,FeSO4 and Fe2(SO4)3 in acidic medium, the number of moles of KMnO4 is:
  1.  1
  2. 2
  3. 3
  4. 1.5

Solution

Eq.KMnO4Eq.FeSO4+Eq.Fe2SO43+EqFeC2O4+Eq.Fe2C2O43
KMnO4MnO4-
5e-+8H++MnO4-Mn+2+4H2O V.F=5

So Eq.KMnO4Eq.FeSO4+Eq.FeC2O4+Eq.Fe2C2O43
n×5=1×1+1×0+1×3+1×6
n×5=1+3+6
n=105=2 mole

Asked in: JEE Main 2019 (08 Apr Shift 1)

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