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3.4 g sample of H(2)O(2) solution contai...

`3.4 g` sample of `H_(2)O_(2)` solution containing `x% H_(2)O_(2)` by weight requires `x mL` of a `KMnO_(4)` solution for complete oxidation under acidic condition. The normality of `KMnO_(4)` solution is

A

`1N`

B

`2 N`

C

`3 N`

D

`0.5 N`

Text Solution

Verified by Experts

The correct Answer is:
B
`100 g of H_(2)O_(2)` sample contains `='x' g H_(2)O_(2)`
`3.4 g of H_(2)O_(2)` sample solution contains `=x/100xx3.4 g`
Weight of `H_(2)O_(2)=(3.4x)/100`
`Eq of H_(2)O_(2)=(3.4x)/100xx1/17`
`mEq of H_(2)O_(2)=(3.4x)/(100xx17)xx1000=(34x)/17=2x`
`mEq of KMnO_(4) =x xxN`
`:. x xxN=2x`
`N=2`
Hence, the correct option (b) .
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