Q. Which of the following compounds would exhibit highest dipole moment?
Solution:
The order of dipole moments
Methanol has higher dipole moment than dimethyl ether because oxygen of bond can withdraw electrons from H atom more easily as compare to oxygen of bond, thus becomes more polar. Acetic acid and acetone has higher dipole moment than methanol, because both has a hybridized oxygen atom
which is more electronegative and electron withdrawing as electronegative and electron withdrawing as compare to hybridized oxygen atom . Whereas the small dipole moment of acetic acid as compare to acetone is due to the dispersion of negative charge between two oxygen atoms.
