Question Detail

CHM 102 Carbonyl Compounds Objective Question
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Question

Why do aldehydes and ketones have higher boiling points than alkanes of similar molecular weight?
Options
A They can form hydrogen bonds with each other
B They are more polar due to the carbonyl group (dipole-dipole interactions)
Correct Answer
C They have higher molecular weight
D They are ionic
Correct Answer

Option B is the correct answer.

Detailed Explanation

Aldehydes and ketones are polar due to the C=O bond, leading to stronger dipole-dipole interactions compared to nonpolar alkanes. However, they cannot hydrogen-bond with each other (no O-H bond).

Hint

Dipole-dipole forces, not H-bonding.

Question Info

Course: CHM 102
Topic: Carbonyl Compounds
Type: Objective
Difficulty: Not specified
Question 625 of 1999
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