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Redox Reactions

Question

Wired Faculty App

when I^- is oxidised by MnO₄^- in an alkaline medium I^- converts into

IO₃^-

I₂

IO₄^-

IO^-

Solution

A.

IO₃^-

When I^- is oxidised by MnO₄^- in alkaline medium, I^- converts into IO₃^-. The reaction occurs as follows,

$2 {KMnO}_{4} + 2 KOH \overset{}{\to} K_{2} {MnO}_{4} + H_{2} O + [O] K_{2} {MnO}_{4} + 2 H_{2} O \overset{}{\to} 2 {MnO}_{2} + 4 KOH + 2 [O]______________________________________K_{2} {MnO}_{4} + H_{2} O \overset{Alkaline}{\to} 2 {MnO}_{2} + KOH + 3 [O] KI + 3 [O] \overset{}{\to} {KIO}_{3} i . e . {IO}_{3}^{-} \overset{}{\to} ion$

Some More Questions From Redox Reactions Chapter

Can oxidation occur without reduction?

What are redox reactions?

What are direct redox reactions? Give one example.

What are indirect redox reactions?

Write formulas for the following compounds:
(a) Mercury (II) chloride
(b) Nickel (II) sulphate
(c) Tin (IV) oxide
(d) Thallium (I) sulphate
(e) Iron (III) sulphate
(f) Chromium (III) oxide

What are electrolytes?

What are cations and anions?

What is electrolysis?

Mention two uses of electrolysis.

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