a solution of kmno4 on reduction yields either (1) colourless solution (2) brown ppt (3) green solution depending on the ph of the solution. what different stages of reduction do these represent and how are these carried out write the reactions involved.

Asked by rishabh katoch | 9th Mar, 2013, 07:03: PM

Expert Answer:

1.  in acidic medium : 2KMnO4  + 3 H2SO4  → K2SO4 +2MnSO4 +3H2O + 5 O.
 
2. In Neutral medium : 2KMnO4  + H2O →  2KOH  + 2MnO2  +3 O .
 
3. In Alkaline medium : 2KMnO4 + 2KOH  → 2K2MnO4 + H2O  +  O  
                                                                 ( green)

Answered by  | 10th Mar, 2013, 10:45: PM

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