Question

KMn4>O2>H2O>NaOH ПЖЖЖ СРОЧНОООООО

Answer 1

1) 2KMnO4 → O2 + MnO2 + K2MnO4
2) O2 + 2H2 → 2 H2O
3) H2O + Na2O = NaOH
Вот и всё :)

Answer 2

1) 2KMnO4 (t°) > O2 + K2MnO4 + MnO2 (термическое разложение перманганата калия с образованием манганата калия, оксида марганца(IV) и кислорода)

2) O2 + 2H2 = 2H2O

3) 2H2O + 2Na = 2NaOH + H2↑

Answer 3

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