KMnO 4 oxidises I -in acidic and neutral/faintly alkaline solution, respectively, to

Question

KMnO 4 oxidises I -in acidic and neutral/faintly alkaline solution, respectively, to (A) IO 3- IO 3- (B) I 2 IO 3- (C) I 2 I 2 (D) IO 3- I 2

Tardigrade Admin · Accepted Answer

In acidic medium 2 MnO 4-+10 I -+16 H + arrow 2 Mn 2++5 I 2+8 H 2 O In neutral/faintly alkaline solution 2 MnO 4-+ I -+ H 2 O arrow 2 MnO 2+2 OH -+ IO 3-

Q. $K M n O_{4}$ oxidises $I^{-}$ in acidic and neutral/faintly alkaline solution, respectively, to

$I O_{3}^{-} & I O_{3}^{-}$

$I_{2} & I O_{3}^{-}$

$I_{2} & I_{2}$

$I O_{3}^{-} & I_{2}$

In acidic medium
$2 M n O_{4}^{-} + 10 I^{-} + 16 H^{+} \to 2 M n^{2 +} + 5 I_{2} + 8 H_{2} O$
In neutral/faintly alkaline solution
$2 M n O_{4}^{-} + I^{-} + H_{2} O \to 2 M n O_{2} + 2 O H^{-} + I O_{3}^{-}$

Q. KMnO4​ oxidises I−in acidic and neutral/faintly alkaline solution, respectively, to

IO3−​&IO3−​

I2​&IO3−​

I2​&I2​

IO3−​&I2​