Write the reaction equation: Mg-MgO-Mg (OH) 2-MgSO4-MgCl2

1) 2Mg + O2 = 2MgO (when magnesium interacts with oxygen, magnesium oxide is formed);

2) MgO + H2O = Mg (OH) 2 (when magnesium oxide interacts with water, magnesium hydroxide is formed);

3) Mg (OH) 2 + H2SO4 = MgSO4 + 2H2O (when magnesium hydroxide interacts with sulfuric acid, magnesium sulfate and water are formed);

4) MgSO4 + BaCl2 = BaSO4 + MgCl2 (when magnesium sulfate interacts with barium chloride, barium sulfate and magnesium chloride are formed).



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