Question #5a8f3

1 Answer
Ernest Z.
Jan 21, 2017

The dipole moment of a ketone is greater than that of an aldehyde.

Explanation:

The polar #"C=O"# bond is responsible for most of the dipole moment of aldehydes and ketones.

Thus, the dipole moment of formaldehyde, #"H"_2"C=O"#, is 2.3 D.

An alkyl group is electron donating, and the dipole moment of acetaldehyde, #"CH"_3"CH=O"#, increases to 2.5 D.

Dipole moments

Acetone, #("CH"_3)_2"C=O"# has two methyl groups donating electrons, and its dipole moment is even larger at 2.9 D.

Related questions
See all questions in Dipoles
Impact of this question
6273 views around the world
You can reuse this answer
Creative Commons License