Question

Na-NaOH-Na2SO4-BaSO4

Answer 1

1 Na + H20 - NaOH + H2

2 2NaOH + H2SO4 - Na2SO4 + 2H2O

3 Na2SO4 + Ba(NO3)2 - BaSO4 + NaNO3

Answer 2

2Na + 2H2O - 2NaOH + H2

Answer 3

вместо 1