43. Solving a chemistry problem

43. Solving a chemistry problem

390. The reaction is expressed by the schemes:
KMnO4 KI H2SO4 = MnSO4 I2 K2SO4 H2O,
CuO H2 = Cu H2O.
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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