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CBSE Class 12-science Answered

Give reaction of KMnO4 with KI in (i) Acidic medium,(ii) Alkaline medium.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Acidic medium: Iodine is liberated from potassium iodide

10I + 2MnO4- + 16H+  2Mn2+ + 8H2O + 5I2
 
Alkaline medium: Iodide is oxidized to iodate
2MnO4 + H2O + I     2MnO2 + 2OH + IO3
Answered by | 04 Jun, 2014, 03:23: PM

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