Question

dipole moment of phenol is smaller than that of methanol . why ?

Answer 1

The lone pair on oxygen atom is used for delocalization in the phenol ring due to which there is a double bond character between C-OH bond and there is positive charge on the oxygen atom as well due to which phenol is less polar and thus has less dipole moment.

Answer 2

Here is your answer ⬇️⬇️⬇️⬇️

The lone pair on oxygen atom is used for delocalization in the phenol ring due to which there is a double bond character between C-OH bond and there is positive charge on the oxygen atom as well due to which phenol is less polar and thus has less dipole moment.

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