Which of the following has maximum boiling point?

Options

A.
B.
C.
D.

Answer

To determine which of the given compounds has the maximum boiling point, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Compounds**: First, we need to identify the four compounds in question. For this example, let's assume they are all C6H14 isomers (hexanes).

2. **Understand Boiling Point Factors**: The boiling point of a compound is influenced by its molecular weight and the structure of the molecule.
- Boiling point is **directly proportional** to molecular weight.
- Boiling point is **inversely proportional** to branching. More branching leads to lower boiling points due to decreased surface area and weaker intermolecular forces.

3. **Check Molecular Weight**: Since all compounds have the same molecular formula (C6H14), they all have the same molecular weight. Therefore, we can conclude that the boiling point will depend solely on the branching of the compounds.

4. **Analyze the Structure**: Among the compounds, identify which one has the least branching. The compound with the least branching will have the highest boiling point because it will have a larger surface area and stronger van der Waals forces.

5. **Conclusion**: The compound with no branching (the straight-chain hexane) will have the highest boiling point compared to its branched counterparts. Therefore, the answer is the straight-chain hexane.

### Final Answer:
The compound with the maximum boiling point is the straight-chain hexane (n-hexane).

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