Объяснение:
Na
Na + O2 = Na2O
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = 2H2O + Na2SO4
BaCl₂ + Na₂SO₄ = BaSO₄↓ + 2NaCl
2NaCl + H2↑ = 2Na + 2HCl
2Na + 2H2O = 2NaOH + H2↑.
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Объяснение:
Na
Na + O2 = Na2O
Na2O + H2O = 2NaOH
2NaOH + H2SO4 = 2H2O + Na2SO4
BaCl₂ + Na₂SO₄ = BaSO₄↓ + 2NaCl
2NaCl + H2↑ = 2Na + 2HCl
2Na + 2H2O = 2NaOH + H2↑.