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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Chaste on September 20, 2008, 11:26:40 AM

Title: who can explain the orange colour I see when KMnO4 gets reduced?
Post by: Chaste on September 20, 2008, 11:26:40 AM

In a lab experiment, I was told to mix methanol, KOH, KMnO4 together in a warm water bath.
I know I'm supposed to see a brown precipitate of MnO2 at the end of the reaction. But can anyone explain to me why did I see a orange solution or orange precipitate?

Thanks.

Title: Re: who can explain the orange colour I see when KMnO4 gets reduced?
Post by: n4k on September 21, 2008, 01:50:51 PM

At oxidation the set of connections is formed

Probably, there was a dirty utensils, or not pure(clean) methanol, KOH and KMnO4