Ответ:
Na → Na2О2 → Na2О→ NaОН → Na2SО4
1) 2Na + O2 → Na2O2
2) Na2O2 + 2Na → 2Na2O
3) Na2O + H2O → 2NAOH
4) 2NaOH + H2SO4 → Na2SO4 + 2H2O
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Ответ:
Na → Na2О2 → Na2О→ NaОН → Na2SО4
1) 2Na + O2 → Na2O2
2) Na2O2 + 2Na → 2Na2O
3) Na2O + H2O → 2NAOH
4) 2NaOH + H2SO4 → Na2SO4 + 2H2O