113. Solving a chemistry problem
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113. Solving a chemistry problem
112. Reactions are expressed by schemes:
HNO3 MnSO4 PbO2 → PbSO4 H2O HMnO4 Pb(NO3)2
KClO3 KOH Cr2O3 → KCl H2O K2CrO4
Write electronic equations. Arrange the coefficients in the reaction equations. For each reaction, indicate which substance is the oxidizing agent, which is the reducing agent; which substance is oxidized and which is reduced.
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