Question:
Which of the following compound has the highest boiling point?
Which of the following compound has the highest boiling point?
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Alcohols have higher boiling points than other organic compounds of comparable molecular mass due to hydrogen bonding.
Updated On: Apr 24, 2026
- n-Butane
- Propan-1-ol
- Methoxy methane
- Propanal
- Acetone
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Boiling point depends on intermolecular forces: Hydrogen bonding$>$Dipole-dipole$>$London dispersion.
Step 2: Detailed Explanation:
Propan-1-ol (CH3CH2CH2OH): Exhibits strong intermolecular hydrogen bonding → highest BP (~97°C).
Propanal (CH3CH2CHO): Dipole-dipole → BP ~49°C.
Acetone (CH3COCH3): Dipole-dipole → BP ~56°C.
Methoxy methane (CH3OCH3): Weak dipole → BP ~-24°C.
n-Butane (C4H10): Only London forces → BP ~-0.5°C.
Step 3: Final Answer:
Propan-1-ol has the highest boiling point.
Boiling point depends on intermolecular forces: Hydrogen bonding$>$Dipole-dipole$>$London dispersion.
Step 2: Detailed Explanation:
Propan-1-ol (CH3CH2CH2OH): Exhibits strong intermolecular hydrogen bonding → highest BP (~97°C).
Propanal (CH3CH2CHO): Dipole-dipole → BP ~49°C.
Acetone (CH3COCH3): Dipole-dipole → BP ~56°C.
Methoxy methane (CH3OCH3): Weak dipole → BP ~-24°C.
n-Butane (C4H10): Only London forces → BP ~-0.5°C.
Step 3: Final Answer:
Propan-1-ol has the highest boiling point.
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