Which of the following compounds will react with `NaHCO_3` solution to give sodium salt if carbon dioxide?

Options

A. Acetic acid
B. N-hexanol
C. phenol
D. Both (1) and (2)

Answer

To determine which of the given compounds will react with sodium bicarbonate (NaHCO₃) to produce a sodium salt and carbon dioxide (CO₂), we need to analyze the nature of the compounds involved.

### Step-by-Step Solution:

1. **Understand the Reactivity of NaHCO₃**:
- Sodium bicarbonate is a weak base and can react with sufficiently acidic compounds.
- It typically reacts with carboxylic acids to produce a sodium salt and carbon dioxide gas.

2. **Identify the Nature of Compounds**:
- We need to identify which of the given compounds are carboxylic acids.
- Carboxylic acids have the functional group -COOH, which is acidic enough to react with NaHCO₃.

3. **Evaluate the Given Compounds**:
- **Acetic Acid (CH₃COOH)**: This is a carboxylic acid and will react with NaHCO₃.
- **Hexanol (C₆H₁₃OH)**: This is an alcohol and does not have sufficient acidity to react with NaHCO₃.
- **Phenol (C₆H₅OH)**: This is also not acidic enough to react with NaHCO₃.

4. **Reaction of Acetic Acid with NaHCO₃**:
- When acetic acid reacts with NaHCO₃, the reaction can be represented as:
\[ \text{CH}_3\text{COOH} + \text{NaHCO}_3 \rightarrow \text{CH}_3\text{COONa} + \text{CO}_2 + \text{H}_2\text{O} \]
- This shows that acetic acid reacts to form sodium acetate (the sodium salt) and releases carbon dioxide and water.

5. **Conclusion**:
- Among the given compounds, only acetic acid will react with NaHCO₃ to produce a sodium salt and carbon dioxide. Therefore, the correct answer is **Acetic Acid**.