The carbon-oxygen bond in phenol is slightly stronger than that in methanol. Why?
The higher bond strength in the compound is due to the resonance effect in the molecule that mimics double bond characters in bonding. Therefore, the size of this bond is decreased in phenol. Also, the oxygen atom in phenol is directly attached to the hybridised carbon atom by single bond. Hence the carbon-oxygen bond in phenol is slightly stronger than that in methanol.