Which of the following compounds has the highest boiling point ?

Options

A. `CH_(3)CH_(2)CH_(2)Cl`
B. `CH_(3)CH_(2)CH_(2)CH_(2)Cl`
C. `CH_(3)CH(CH_(3))CH_(2)Cl`
D. `(CH_(3))_(3)C Cl`

Explanation

To determine which of the given compounds has the highest boiling point, we need to consider two main factors: molecular mass and branching of the carbon chain. Let's analyze the compounds step by step.

### Step 1: Identify the Compounds
Assuming we have four compounds to compare, we need to identify their structures and molecular masses. For this solution, let's denote the compounds as A, B, C, and D.

### Step 2: Compare Molecular Masses
The boiling point is generally directly proportional to the molecular mass of the compounds. Therefore, we should calculate or estimate the molecular masses of each compound.

- **Compound A:** 3 Carbon atoms + Chlorine
- **Compound B:** 4 Carbon atoms + Chlorine
- **Compound C:** 4 Carbon atoms + Chlorine (isomer of B)
- **Compound D:** More branched structure with 4 Carbon atoms + Chlorine

From this, we can see that:
- Compound B and Compound C both have a higher molecular mass than Compound A since they have more carbon atoms.
- Compound D has a similar molecular mass to B and C but is more branched.

### Step 3: Analyze the Effect of Branching
Branching in carbon chains affects boiling points inversely. The more branched a compound is, the lower its boiling point tends to be due to decreased surface area and weaker van der Waals forces.

- **Compound A:** No branching, higher boiling point potential.
- **Compound B:** Straight chain, no branching, likely the highest boiling point.
- **Compound C:** Isomer of B, may have a similar boiling point but could be slightly lower due to structural differences.
- **Compound D:** Highly branched, lowest boiling point among the four.

### Step 4: Conclusion
Based on the analysis:
- Compound B, which has 4 carbon atoms in a straight chain and no branching, will have the highest boiling point compared to the others.

Thus, the compound with the highest boiling point is **Compound B**.