Question

1. Ca -> Ca(OH)2 -› CaCO3 -› CaO -› CaCl2 -› СаСоз; 2. CuO -> CuS04 -> Cu(OH)2 -› CuO -> CuCl2.

Answer 1

Відповідь:

1.Послідовність хімічної реакції така:

Ca → Ca(OH)2 → CaCO3 → CaO → CaCl2 → CaCO3

Отриманий кінцевий продукт CaCO3.

2.Послідовність хімічної реакції така:

CuO → CuSO4 → Cu(OH)2 → CuO → CuCl2

Отриманим кінцевим продуктом є CuCl2.

Пояснення:

Answer 2

The reactions you provided describe a series of chemical transformations for two different elements: calcium (Ca) and copper (Cu). Let's break down each reaction step by step:

1. For calcium (Ca):

   a. Ca → Ca(OH)₂: Calcium reacts with water (H₂O) to form calcium hydroxide (Ca(OH)₂). b. Ca(OH)₂ → CaCO₃: Calcium hydroxide reacts with carbon dioxide (CO₂) to produce calcium carbonate (CaCO₃). This reaction is commonly known as carbonation. c. CaCO₃ → CaO: Calcium carbonate undergoes thermal decomposition when heated to form calcium oxide (CaO). This reaction is called calcination. d. CaO → CaCl₂: Calcium oxide reacts with chlorine (Cl₂) gas to produce calcium chloride (CaCl₂). e. CaCl₂ → CaCO₃: Calcium chloride reacts with sodium carbonate (Na₂CO₃) to produce calcium carbonate (CaCO₃). This reaction is known as a double displacement reaction or precipitation reaction.

2. For copper (Cu):

   a. CuO → CuSO₄: Copper oxide reacts with sulfuric acid (H₂SO₄) to form copper sulfate (CuSO₄). b. CuSO₄ → Cu(OH)₂: Copper sulfate reacts with sodium hydroxide (NaOH) to produce copper hydroxide (Cu(OH)₂). This reaction is a double displacement reaction. c. Cu(OH)₂ → CuO: Copper hydroxide undergoes thermal decomposition when heated to yield copper oxide (CuO). d. CuO → CuCl₂: Copper oxide reacts with hydrochloric acid (HCl) to form copper chloride (CuCl₂).

Please note that in the provided reactions, some steps involve additional reactants or conditions not explicitly mentioned. The reactions represent a simplified overview of the transformations but may not capture the complete reaction mechanisms or stoichiometry.