Question

C→CO→CO2→H2CO3→CaCO3→CaO

Answer 1

2 C  + O₂  → 2 CO

2 CO  + O₂  → 2 CO₂

CO₂ + H₂O → H₂CO₃

H₂CO₃ + Ca(OH)₂ → 2 H₂O + CaCO₃

CaCO₃ → CO₂  + CaO

Answer 2

The sequence you've provided appears to represent a series of chemical reactions involving carbon and calcium compounds. Let's break down each step:

1. C (Carbon) → This represents elemental carbon.

2. CO (Carbon Monoxide) → Carbon reacts with oxygen to form carbon monoxide.

3. CO2 (Carbon Dioxide) → Carbon monoxide further reacts with oxygen to form carbon dioxide.

4. H2CO3 (Carbonic Acid) → Carbon dioxide can dissolve in water to form carbonic acid.

5. CaCO3 (Calcium Carbonate) → Calcium ions (Ca²⁺) can react with carbonic acid to form calcium carbonate, which is often found in nature as a mineral.

6. CaO (Calcium Oxide) → Calcium carbonate can be thermally decomposed to form calcium oxide, also known as quicklime.

Each of these reactions represents a chemical transformation involving carbon and calcium compounds, with various oxidation states and bonding configurations. These reactions may have practical applications in industrial processes, environmental chemistry, or geological processes. If you have specific questions about any of these reactions or their applications, please feel free to ask.