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The carbon-oxygen bond in phenol is slig...

The carbon-oxygen bond in phenol is slightly stronger than that in methanol. Why ?

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Positive resonance effect is observed in phenols. Due to this +R effect, lone pair of electrons of -OH group are in conjugation with `pi` electrons of the ring and the following resonance hybrid are obtained.

From the above resonating structure, it is very clear that C-O bond of phenol acquires some partial double bond character while the C-O bond of methanol is purely single bond. Therefore, the carbon-oxygen bond in phenol is slightly stronger than that in methanol.
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Knowledge Check

  • The carbon-oxygen bond length in phenol is _______.

    A
    120 pm
    B
    136 pm
    C
    150 pm
    D
    180 pm

  • Bond angle in ethers is slightly less than

    A
    Square Planar angle
    B
    Trigonal bipyramidal angle
    C
    Tetrahedral angle
    D
    None of the above

  • Which of the following is stronger acid than methanol?

    A
    `CH_(3) - C -= CH`
    B
    C
    D
    `H_(3)C - underset(h)underset(|)O^(+)-H`

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