A good method of preparing pure oxygen on a small scale is the decomposition of KMnO4 in a vacuum above 215°C: 2 KMnO4(s) → K,MnO4(s) + MnO,(s) + O3(g) Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained.

Chemistry
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Chapter1: Chemical Foundations
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A good method of preparing pure oxygen on a small
scale is the decomposition of KMnO4 in a vacuum above
215°C:
2 KMnO4(s) → K,MnO4(s) + MnO,(s) + O3(g)
Assign an oxidation number to each atom and verify that
the total number of electrons lost is equal to the total
number gained.
Transcribed Image Text:A good method of preparing pure oxygen on a small scale is the decomposition of KMnO4 in a vacuum above 215°C: 2 KMnO4(s) → K,MnO4(s) + MnO,(s) + O3(g) Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained.
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