`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

Options

A. 1N
B. 2N
C. 3N
D. 0.5N

Answer

B

Explanation

100 g of `H_(2)O_(2)` sample solution contains x g of `H_(2)O_(2)`.
3.4 g of solution contains`=(x)/(100)xx3.4`
Weight of `H_(2)O_(2)=(3.4x)/(100)`
" Eq of "`H_(2)O_(2)=(3.4x)/(100)xx(1)/(17)`
`m" Eq of "H_(2)O_(2)=(3.4x)/(100xx17)xx1000=(34x)/(17)=2x`
`m" Eq of "KMnO_(4)=x xxN`
`x xxN=2x`
`N=2`