Finish the equations of possible reactions: zinc chloride + potassium hydroxide; barium oxide

Finish the equations of possible reactions: zinc chloride + potassium hydroxide; barium oxide + sulfuric acid; copper carbonate + hydrochloric acid; ammonia nitrate + barium hydroxide; carbon monoxide + sodium hydroxide; aluminum oxide + sulfuric acid; calcium hydroxide + phosphoric acid.

The reaction takes place between such substances as zinc chloride and potassium hydroxide. Zinc hydroxide and potassium chloride salt are formed.

ZnCl₂ + 2 KOH = Zn (OH) ₂ + 2KCl

Zn²⁺ + 2 Cl⁻ + 2 K⁺ + 2 OH⁻ = Zn (OH) ₂ + 2 K⁺ + 2 Cl⁻

Zn²⁺ + 2 OH⁻ = Zn (OH) ₂

Reaction between copper carbonate salt and hydrochloric acid. As a result of the reaction, the salt is copper chloride and carbonic acid, which decomposes into water and carbon dioxide.

CuCO₃ + 2HCl = CuCl₂ + CO₂ + H₂O

CuCO₃ + 2H⁺ + 2Cl⁻ = Cu²⁺ + 2Cl⁻ + CO₂ + H₂O

CuCO₃ + 2H⁺ + = Cu²⁺ + CO₂ + H₂O

Ammonium nitrate reacts with barium hydroxide. Divalent barium nitrate salt, ammonia and water are formed.

2 NH₄NO₃ + Ba (OH) ₂ = Ba (NO₃) ₂ + 2 NH₃ + 2 H₂O

2 NH₄⁺ + 2 NO₃⁻ + Ba²⁺ + 2 OH⁻ = Ba²⁺ + 2 NO₃⁻ + 2 NH₃ + 2 H₂O

2NH₄⁺ + 2OH⁻ = 2NH₃ + 2H₂O

The reaction takes place between substances such as carbon dioxide and sodium hydroxide. As a result of the reaction, substances are formed: sodium carbonate salt and water.

CO₂ + 2 NaOH = Na₂CO₃ + H₂O

CO₂ + 2Na⁺ + 2OH⁻ = 2Na⁺ + CO₃²⁻ + H₂O

CO₂ + 2OH⁻ = CO₃²⁻ + H₂O

The reaction takes place between substances such as aluminum oxide and sulfuric acid. As a result of the reaction, a substance is formed: the salt is trivalent aluminum sulfate and water is released.

Al₂O₃ + 3 H₂SO₄ = Al₂ (SO₄) ₃ + 3 H₂O

Al₂O₃ + 6 H⁺ + 3 SO₄²⁻ = 2 Al³⁺ + 3 SO₄²⁻ + 3 H₂O

Al₂O₃ + 6 H⁺ = 2 Al³⁺ + 3 H₂O

Calcium hydroxide and phosphoric acid react to form calcium hydrogen phosphate and water.

Ca (OH) ₂ + H₃PO₄ = CaHPO₄ + 2 H₂O

Ca²⁺ + 2 OH⁻ + 3 H⁺ + PO₄³⁻ = Ca²⁻ + HPO₄²⁻ + 2 H₂O

2 OH⁻ + 3 H⁺ + PO₄³⁻ = HPO₄²⁻ + 2 H₂O.