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100 ml of 0.1M aqueous ferric alum solut...

100 ml of 0.1M aqueous ferric alum solution is completely reduced with Iron to give Ferrous Ions. The volume of 0.1M acidified `KMnO_4` solution required for complete reaction with ferrous Ions in the solution will be

A

60 ml

B

30 ml

C

40 ml

D

100 ml

Text Solution

Verified by Experts

The correct Answer is:
C
`Fe^(+3)+Ferarr2Fe^(+2)`
`100xx0.1 xx2=0.5xxV`
`V=(100xx0.2)/(0.5)=200/5=40` ml
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