What volume of 0.2 M `Ba( MnO_(4))_2` solution is required for complete oxidation of 25 gm of 89.6% pure Fe Co, in acidic medium according to the reaction `MnO_(4)^(-) +FeCr_(2)O_(4) rarrFe^(+3) +Cr_(2)O_(7)^(2-)+Mn^(+2)`

Options

A. 700 ml
B. 175 ml
C. 350 ml
D. 200 ml

Answer

C

Explanation

No of milli equivalents of `Ba(MnO_(4))_(2)` = No, of milli equivalents of `FeCr_(2)O_(4)`
n-factor of `Ba(MnO_(4))_(2) = 10`
n-factor of `FeCr_(2)O_(4)= 7 `
`:. V xx0.2xx10=(25xx89.6xx10^(3))/(100xx((224)/7))`
`:. V=350 ml`