`x g` of `H_2O_2` requires `100mL` of `M//5 KMnO_4` in a titration in a solution having `pOH = 1.0` Which of the following is`//`are correct?

Options

A. the value of x is 1.7 g
B. the value of x is 0.34 g
C. `MnO_(4)^(ɵ)` changes to `MnO_(4)^(2-)`
D. `H_(2)O_(2)` changes to `O_(2)`.

Answer

B, C, D

Explanation

`pOH=1`, strong basic medium
`impliesMnO_(4)^(ɵ)toMnO_(4)^(2-)("n-factor"=1)`
`2overset(ɵ)(O)H+H_(2)O_(2)toO_(2)+2H_(2)O+2e^(-)`
`mEw of H_(2)O_(2)= m" Eq of "MnO_(4)^(ɵ)`
`(x)/((34)/(2))xx1000=100xx((1)/(5)xx1)`
`x=0.34g`