Which one is most volatile?

Options

A. `CH_(3)CH_(2)CH_(2)NH_(2)`
B. `(CH_(3))_(3)N`
C.
D. `CH_(3)OH`

Answer

To determine which compound is the most volatile among the given options, we need to analyze the volatility of each compound based on their ability to form hydrogen bonds. Volatility refers to the tendency of a substance to vaporize, and it is influenced by intermolecular forces, particularly hydrogen bonding.

### Step-by-Step Solution:

1. **Understanding Volatility**:
- Volatility is the tendency of a substance to change into a gaseous state. The more volatile a substance is, the easier it transitions to gas.

2. **Identifying Hydrogen Bonding**:
- Compounds that can form hydrogen bonds tend to have lower volatility because hydrogen bonding creates stronger intermolecular attractions, making it harder for the molecules to escape into the gas phase.

3. **Analyzing Each Option**:
- Let's denote the options as follows:
- Option A: CH3CH2CH2NH2 (a primary amine)
- Option B: (Tertiary amine, e.g., (CH3)3N)
- Option C: CH3OH (methanol)
- Option D: (Another compound, e.g., CH3NH2)

4. **Evaluating Each Compound**:
- **Option A (Primary Amine)**: Can form hydrogen bonds with two hydrogen atoms. This results in stronger intermolecular forces, leading to lower volatility.
- **Option B (Tertiary Amine)**: Lacks hydrogen atoms attached to nitrogen, so it cannot form hydrogen bonds as effectively. This results in higher volatility compared to primary amines.
- **Option C (Methanol)**: Can form hydrogen bonds due to the presence of an -OH group. This results in lower volatility due to strong intermolecular forces.
- **Option D (Another Amine)**: Depending on its structure, it may have varying hydrogen bonding capabilities.

5. **Conclusion**:
- Among the options, the tertiary amine (Option B) is the most volatile because it has the least ability to form hydrogen bonds, allowing it to vaporize more easily compared to the others.

### Final Answer:
**The most volatile compound is the tertiary amine (Option B).**