Question

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

Answer 1

Ответ:

1) 2Ca+O2↑=2CaO

2) CaO+H2O=Ca(OH)2

3) Ca(OH)2+CO2↑=CaCO3↓+H2O

4) CaCO3↓=CaO+CO2↑ (идёт под действием температуры t°)

5) CaO+2HCl=CaCl2+H2O

Отметь мой ответ лучшим, пожалуйста!

Answer 2

It looks like you've listed a series of chemical reactions involving calcium (Ca) and various compounds. Let me break down each step of the reaction sequence you provided:

1. Ca → CaO: This represents the reaction of calcium (Ca) with oxygen (O2) to form calcium oxide (CaO), also known as quicklime.

2. CaO → Ca(OH)2: Calcium oxide (CaO) reacts with water (H2O) to produce calcium hydroxide (Ca(OH)2), also known as slaked lime.

3. Ca(OH)2 → CaCO3: Calcium hydroxide (Ca(OH)2) reacts with carbon dioxide (CO2) from the air to form calcium carbonate (CaCO3), a compound commonly found in minerals like limestone.

4. CaCO3 → CaO: Heating calcium carbonate (CaCO3) results in the decomposition of calcium carbonate into calcium oxide (CaO) and carbon dioxide (CO2). This reaction is used in various industrial processes, such as in the production of cement.

5. CaO → CaCl2: Calcium oxide (CaO) can react with hydrochloric acid (HCl) to produce calcium chloride (CaCl2), a salt commonly used for de-icing roads and in various industrial applications.

It's important to note that these reactions describe the general chemical processes, but the specific conditions (such as temperature, pressure, concentrations, etc.) under which these reactions occur can affect the actual outcomes. Additionally, these reactions might not all proceed in a single sequence in a real-world context, as they could be part of different processes or applications.