Which of the substances is CO2 HCICA (OH) 2 Fe. MgO. CuSO4- can barium hydroxide interact?

Which of the substances is CO2 HCICA (OH) 2 Fe. MgO. CuSO4- can barium hydroxide interact? make up an equation of possible responses.

Barium hydroxide is a soluble base – an alkali. Therefore, it reacts with acids, acidic oxides and salts if one of the products precipitates. This means that it will react with CO2 – this is an acidic oxide, with HCI – this is hydrochloric acid and CuSO4 – copper sulfate.
1. Ва (ОН) 2 + СО2 = ВаСО3 + Н2О (barium carbonate and water, exchange reaction);
2. Ba (OH) 2 + 2 HCI = BaCI2 + 2 H2O (barium chloride and water, exchange reaction);
3. Ba (OH) 2 + CuSO4 = BaSO4 + Cu (OH) 2 (barium sulfate and copper hydroxide, exchange reaction).