Write molecular and, where it takes place, ionic equations of reactions according to the scheme: Ba → BaO → Ba (OH) ₂

Write molecular and, where it takes place, ionic equations of reactions according to the scheme:
Ba → BaO → Ba (OH) ₂ → BaSO₄.
Indicate the types of reactions by the number and composition of the starting materials and reaction products.

2Ba + O₂ = 2BaO + H₂O = Ba (OH) ₂ addition; Ba (OH) ₂ + H₂SO₄ = BaSO₄ + 2H₂O exchange

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