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Carbonyl compounds are more polar than a...

Carbonyl compounds are more polar than alcohols although electronegative difference between C and O atoms is less than O and H atoms. Explain.

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In the carbonyl group `(gtC = O)` the `pi`-electron pair is loosely held and can be readily shifted to the oxygen atom. It is not the case with the alcoholic `(O-H)` group. Therefore, carbonyl compounds are more polar and have higher dipole moment values `(2.3-2.8D)` than the alcohols `(1.6-1.8D)`. For more details, consult section 7.
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Knowledge Check

  • In a compound XY, the electronegativity difference between X and Y is greater than 1.7, then compound XY soluble in

    A
    Benzene
    B
    `C Cl_(4)`
    C
    `H_(2)O`
    D
    `CS_(2)`

  • Carbon compounds containing more than one halogen atom is called

    A
    alkyl halide
    B
    alkane
    C
    alkene
    D
    polyhalogen compound

  • Identify compounds more acidic than H_(2)O .

    A
    `OH`
    B
    C
    `HC-=CH`
    D
    `CH_(3)-COOH`

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    Why are carboxylic acids more acidic than alcohols or phenols although all of them have hydrogen linked to a oxygen atom?

    Why are carboxylic acids more acidic than alcohols or phenols although all of them have hydrogen atom attached to a oxygen atom (-O-H)?

    For the formation of ionic bond between two atoms, the electronegativity difference between them should be greater than or equal to

    A is 75% less than B and C is 75% of the difference between A and B. C is what percentage more than A?

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