4. Какие реакции осуществимы?

а) Mg +N2 → б) Cu + H2O → в) Li + H2O →

г) K + H2 → д) Al + H2SO4(конц.) → е) Fe + ZnCl2 →



А) а, г, е Б) б, в, д

В) б, д, е Г) а, в, г
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