Write the equations of all possible reactions between the following substances barium oxide sulfur oxide (4)

Write the equations of all possible reactions between the following substances barium oxide sulfur oxide (4) sodium hydroxide nitric acid.

1) BaO + SO2 = BaSO3-barium oxide
2) 2HNO3 + BaO = Ba (NO3) 2 + H2O-sulfur oxide (4)
3) NaOH + HNO3 = NaNO3 + H2O-sodium hydroxide
4) 2NaOH + SO2 = Na2SO3 + H2O- nitric acid



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