Solution of task 237 of Chemistry Book Shimanovich 2003

Solution of task 237 of Chemistry Book Shimanovich 2003

237. Reactions are expressed by schemes:
Cr2O3 + KClO3 + KOH - K2CrO4 + KC1 + H2O
MnSO4 + PbO2 + HNO3 - HMnO4 + Pb (NO3) 2 + PbSO4 + H2O
Compose electronic equations. Arrange the coefficients in the reaction equations. For each reaction, indicate which substance is an oxidizer, which is a reducing agent; What substance is oxidized, what is recovered.

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