Запишите уравнения реакций, с помощью которых можно осуществить следующие превращения: Na -> Na2O -> NaOH -> Na2CO3 -> Na.
K + H2O =
Cu + FeSO4 =
Al + C =
Fe + H2SO4 =
при сгорании Na в O2 образуется не оксид а пероксид,составом Na2O2!
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