1.

A sample of H_(2)O_(2) is x % by mass. If x ml of KMnO_(4) are required to oxidize 1 gm of this H_(2)O_(2) sample, calculate the normality of KMnO_(4) solution.

Answer»

`0.46N`
`0.5N`
`0.6N`
`0.65N`

Solution :Let mass of `H_(2)O_(2)` solution = 100 gm
mass of `H_(2)O_(2)` present is = XGM
GIVEN that mass of `H_(2)O_(2)` solution taken = 1 gm,
So, mass of `H_(2)O_(2)` present in 1 gm solution
`=(x)/(100)` Eq. of `H_(2)O_(2)=(x)/(100xx(34//2))`
Eq. of `KMnO_(4)=NxxV(C)=Nxx x xx10^(-3)`
Now `(x)/(100xx17)=Nxx x xx10^(-3)impliesN=0.59N`


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