The number of moles of `KMnO_(4)` reduced by `1 "mol of" KI` in alkaline medium is

Options

A. `1//5`
B. `1//2`
C. `1//4`
D. `1//5`

Answer

D

Explanation

`{:(2KMnO_(4)+,KI+,H_(2)O,rarr,KIO_(3)+,2MnO_(2)+,2KOH),(,Mn^(7+),+3e,rarr,Mn^(4+),,),(,,I^(-),rarr,I^(5+),+6e,):}`
`:. 2 "mole of KMnO_(4)` reduced by `1` mole `KI`