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OpenStudy (anonymous):

Which element is the reducing agent in this reaction? 2KMnO4+3Na2SO3+H2O→2MnO2+3Na2SO4+2KOH

OpenStudy (anonymous):

KMnO4 is a strong oxidizer; Na2SO3 is likely oxidized and KMnO4 is reduced. "Reductants in chemistry are very diverse. Electropositive elemental metals, such as lithium, sodium, magnesium, iron, zinc, and aluminium, are good reducing agents. These metals donate or give away electrons readily." http://en.wikipedia.org/wiki/Redox Based on this, I'd go with Na.

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