Осуществить преобразования:
Na -> Na2O -> NaOH -> Na2SO4 -> NaCl -> NaNO3
Na -> Na2O -> NaOH -> Na2SO4 -> NaCl -> NaNO3
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2) Na2O + H2O->2NaOH
3) 2NaOH + ZnSO4 -> Na2SO4+Zn(OH)2⬇
4) Na2SO4 + BaCl2-> 2NaCl +BaSO4⬇
5) NaCl + AgNO3 ->NaNO3 + AgCl⬇