A `8gm` sample of iron are containing `V%` (by wt) of iron `(Fe^(2+))` was present in `1L` solution. This solution required `V` ml of a `KMnO_(4)` solution for oxidation of `Fe^(2+)` in acidic medium. If in another titration `20ml` of same `KMnO_(4)` is required, for oxidaton of `20ml` of `H_(2)O_(2)` in acidic medium. Find volume strength of `H_(2)O_(2)`

Answer

8

Explanation

Meq. of `Fe^(2+)=` meq of `KMnO_(4)=(8xxVxx1xx1000)/(100xx56)=N_(KMnO_(4))` is same in both
Meq of `KMnO_(4)=` meq of `H_(2)O_(2)`
`20xx 8/5.6=20xxN=20xxX("vol. strength")/5.6`
so vol stre. of ` H_(2)O_(2)=8`