Solution of task 223 of Chemistry Book Shimanovich 2003

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223. Compose electronic equations and indicate which process - oxidation or reduction -
Occurs at the following transformations:
As3-As5 +; N3 + N3-; S2-S0
On the basis of the electronic equations, arrange the coefficients in the reaction equation, following the scheme:
Na2SO3 + KMnO4 + H2O Na2SO4 + MnO2 + KOH


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