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How Do You Prepare: K2mno4 from Mno2? - Chemistry

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How do you prepare:

K2MnO4 from MnO2?

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Solution

K2MnO4 can be prepared from pyrolusite (MnO2). The ore is fused with KOH in the presence of either atmospheric oxygen or an oxidising agent, such as KNO3 or KClO4, to give K2MnO4.

2 MnO2 + 4 KOH + O\[\to^\Delta\]2 K2MnO4 +2 H2O

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Concept: P - Block Group 16 Elements - Classification of Oxides
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