`20ml ofH_(2)O_(2)` after acidification with dilute `H_2SO_(4)`required 30mlof `(N)/(12)KMnO_4` for complete oxidation. The approximate strength of `H_(2)O_(2)` solution (ing/L)is : [Molar mass of `H_2O_2=34`]

Options

A. 2 g/L
B. 4 g/L
C. 8 g/L
D. 6 g/L

Answer

A

Explanation

meq. Of `KMnO_(4)` = meq of `H_(2)O_(2)`
`30xx(1)/(12)=20xxN' rArr N' = (30)/(12xx20)=(1)/(8)N`
`:. ` strength `=N'xx` equivalent mass `=(1)/(8)xx17=2.12` g/L.