Question:
Which of the following compounds has the highest boiling point?
Which of the following compounds has the highest boiling point?
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Compounds capable of intermolecular hydrogen bonding generally possess higher boiling points.
Updated On: Jun 3, 2026
- Propane
- Propanal
- Propan-1-ol
- Dimethyl ether
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The Correct Option is C
Solution and Explanation
Concept:
Boiling point depends upon intermolecular forces.
Step 1: Analyze intermolecular forces.
Step 2: Compare boiling points. Hydrogen bonding significantly increases boiling point because extra energy is required to break intermolecular attractions. Therefore: \[ \text{Propan-1-ol} \] has maximum boiling point.
Step 3: Final conclusion. \[ \boxed{\text{Propan-1-ol}} \]
- Hydrogen bonding causes maximum attraction.
- Dipole-dipole interactions are weaker.
- Van der Waals forces are weakest.
Step 1: Analyze intermolecular forces.
- Propane contains only weak Van der Waals forces.
- Propanal and dimethyl ether contain dipole-dipole interactions.
- Propan-1-ol contains intermolecular hydrogen bonding.
Step 2: Compare boiling points. Hydrogen bonding significantly increases boiling point because extra energy is required to break intermolecular attractions. Therefore: \[ \text{Propan-1-ol} \] has maximum boiling point.
Step 3: Final conclusion. \[ \boxed{\text{Propan-1-ol}} \]
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