Question

Dipole moment of methanol is higher than that of phenol why

Answer 1

In phenol, the lone pairs of electrons of the oxygen atom are delocalised across the aromatic ring (via electron transfer known as resonance) this reduces the polarity of the C-O bond. Methanol, which has no aromatic ring and the lone pair of electrons from the oxygen are not delocalised meaning that the C-O bond in this case has a higher polarity.

Answer 2

In phenol,the lone pairs of electrons of the oxygen atom are delocalised across the aromatic ring(via electron transfer known as resonance) this reduces the polarity of c-o bond, Methanol ,which has no aromatic ring and the lone pair of electrons from the oxygen are not delocalised meaning that the c-o bond in this case has a higher polarity.