Postassium permanganate is manufactured a large scale by fusing - with KOH and `KNO_(3)` to form `K_(2)MnO_(4)`, which is than electrolytically oxidized in an alkaline medium.A. manganite, `Mn_(2)O_(3)` . `H_(2)O`B. hausmannite, `Mn_(3)O_(4)`C. pyrolusite, `MnO_(2)`D. braunite, `Mn_(2)O_(3)`

Postassium permanganate is manufactured a large scale by fusing - with

1.	Postassium permanganate is manufactured a large scale by fusing - with KOH and `KNO_(3)` to form `K_(2)MnO_(4)`, which is than electrolytically oxidized in an alkaline medium.A. manganite, `Mn_(2)O_(3)` . `H_(2)O`B. hausmannite, `Mn_(3)O_(4)`C. pyrolusite, `MnO_(2)`D. braunite, `Mn_(2)O_(3)`
Answer» Correct Answer - C `MnO_(2)` `overset ("fuse with KOH") underset ("oxidize with" KNO_(3)) rarr` `MnO_(4)^(2-)` `overset ("electrolytic oxidation") underset ("in alkaline solution") rarr` `MnO_(4)^(-)` The function of `KNO_(3)` is to provide `O_(2)` to oxidize `MnO_(2)` to `K_(2)MnO_(4)` : `2MnO_(2) + 4KOH + O_(2) rarr 2KMnO_(4) + 2H_(2)O` On passing current, the oxygen evolved at anode oxidises manganese into permangnate. `2K_(2)MnO_(4) + H_(2)O + O rarr 2KMnO_(4) + 2KOH` To oxidize manganate to permanganate, we can also use `CO_(2), CI_(2)` or `O_(3)` but not `H_(2)O_(2)` as it is relatively a weak oxidizing agent.

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Postassium permanganate is manufactured a large scale by fusing - with KOH and `KNO_(3)` to form `K_(2)MnO_(4)`, which is than electrolytically oxidized in an alkaline medium.A. manganite, `Mn_(2)O_(3)` . `H_(2)O`B. hausmannite, `Mn_(3)O_(4)`C. pyrolusite, `MnO_(2)`D. braunite, `Mn_(2)O_(3)`

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