`KMnO_(4)` acts as on oxidising agent in alkaline medium. When alkaline `KMnO_(4)` is treated with `KI`, iodide ion is oxidised to `…………….`

Options

A. `I_(2)`
B. `IO^(-)`
C. `IO_(3)^(-)`
D. `IO_(4)^(-)`

Answer

C

Explanation

`KMnO_(4)` acts as an oxidising agent in alkaline medium. When alkaline `KMnO_(4)` is treated with `KI`, iodide ion is oxidised to `IO_(3)^(-)`.
Reaction `2KMnO_(4) + H_(2)O + KI rarr 2MnO_(4) + 2KOH + KIO_(3)`
or, `" "I^(-) + 6OH^(-) rarr IO_(3)^(-) + 3H_(2)O + 6e^(-)`