13. Решение задачи по химии №001 322

5. Write the equations of redox reactions in electronic and ion-electronic forms: a) Cr(NO3)3 PbO2 NaOH; b) K2S K2SO3 HCl; c) MnO2 H2O2 H2SO4; d) NaNO2 KMnO4 H2SO4; e) Ni(OH)3 H2O2 H2SO4. Specify the oxidizing agent, reducing agent and the reaction of the medium. Write down the standard redox potentials of pairs. Why are these reactions used in qualitative analysis?

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