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Na + H2O --> ... + ...
NaOH + H2SO4 --> ... + ...
Na2O + H2SO4 --> ... + ...
Na+ H2So4 --> ... + ...
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a)
2Na + 2H₂O ---> 2NaOH + H₂^
b)
2NaOH + H₂SO₄ ---> Na₂SO₄ + 2H₂O
c)
Na₂O + H₂SO₄ ---> Na₂SO₄ + H₂O
d)
2Na + H₂SO₄ ---> Na₂SO₄ + H₂^