Oxidation states of manganese and pH

AI Thread Summary
The stability of manganese oxidation states varies with pH, showing that Mn acts as a stronger oxidizing agent in acidic conditions. This raises questions about the stability of higher oxidation states of manganese in alkaline environments. A brown precipitate forms in permanganate solutions, indicating potential decomposition reactions. Participants are encouraged to explore the reaction equations for this decomposition and identify the products. Understanding these dynamics is crucial for applications in chemistry and environmental science.
Moogie
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Hi

I am interested in the change in the stability of the oxidation states of manganese with pH

Mn is a stronger oxidising agent in acid than in base which would lead you to believe that the higher oxidation states of Mn are more stable in alkaline conditions.

Does anyone have a reason why? I couldn't find one

Thanks
 
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There is a brown precipitate forming in solutions of permanganate. Have you tried to write reaction equation for the decomposition reaction? What are products of the decomposition?
 
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