Which one of these will react with sodium metal-

Options

A. Ethyne
B. `1-`Butyne
C. `2-`Butyne
D. Ethane

Answer

To determine which compounds will react with sodium metal, we need to analyze the types of hydrocarbons given in the question. The question likely includes ethane, ethyne (acetylene), 1-butyne, and 2-butyne.

### Step-by-Step Solution:

1. **Identify the Compounds**:
- Ethane (C2H6) - an alkane
- Ethyne (C2H2) - an alkyne
- 1-Butyne (C4H6) - a terminal alkyne
- 2-Butyne (C4H6) - a non-terminal alkyne

2. **Understand the Reactivity with Sodium**:
- Alkanes (like ethane) do not react with sodium metal.
- Alkynes can react with sodium metal, particularly terminal alkynes, which have an acidic hydrogen atom.

3. **Evaluate Each Compound**:
- **Ethane**: As an alkane, it does not react with sodium metal.
- **Ethyne (Acetylene)**: This is an alkyne and can react with sodium metal.
- **1-Butyne**: This is a terminal alkyne and can react with sodium metal.
- **2-Butyne**: This is a non-terminal alkyne and does not react with sodium metal.

4. **Conclusion**:
- The compounds that will react with sodium metal are ethyne and 1-butyne. Ethane and 2-butyne will not react.

### Final Answer:
Ethyne (C2H2) and 1-butyne (C4H6) will react with sodium metal.