Question

Complete the following chemical equation:
\(\underline{\hspace{2cm}}\) + CO_2 \rightarrow \text{CaCO}_3 + \text{H}_2\text{O}

• A. CaO
• B. Ca(OH)_2
• C. CaH_2
• D. CH_3COOH

Hint:

Remember: The reaction between calcium oxide (CaO) and carbon dioxide (CO2) forms calcium carbonate (CaCO3), which is commonly used in limestone.

Answer 1

The Correct Option is A

Step 1: Chemical reaction context
This is a reaction of calcium oxide with carbon dioxide to produce calcium carbonate and water. The correct reactant is calcium oxide, CaO, which reacts with CO_2 to form CaCO_3 (calcium carbonate) and H_2O (water).
Step 2: Final Answer
The correct chemical equation is:
\[ \text{CaO} + \text{CO}_2 \rightarrow \text{CaCO}_3 + \text{H}_2\text{O} \] \[ \boxed{\text{CaO}} \]