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Why is there a large difference in the b...

Why is there a large difference in the boiling points of butanal and butan-1-ol ?

Text Solution

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Butan-1-ol contains an O-H group and hence undergoes intermolecular H-bonding.

Therefore, its b.p. is much higher than that of butanal `(CH_(3)CH_(2)CH_(2)CHO)` which does not contain an O-H group and hence does not undergo H-bonding. instead, it has only weak dipole-dipole interactions.
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Suggest a reason for the large difference in the boiling points of butanol and butanal, although they have the same solubility in water.

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Knowledge Check

  • There is a large difference in the boiling points of butanal and butan - 1 - ol due to

    A
    intermolecular hydrogen bonding in butan -1-ol
    B
    intramolecular hydrogen bonding in butanal
    C
    higher molecular mass of butan-1-ol
    D
    resonance shown by butanal .

  • Large difference in boiling points is observed in

    A
    N and P
    B
    P and As
    C
    As and Sb
    D
    Sb and Bi

  • How do the boiling points of butane, propane and ethane compare?

    A
    The boiling point of ethane is greatest
    B
    The boiling point of butane is greatest
    C
    The boiling point of propane is greatest
    D
    There is no relationship among these three alkanes and their boiling points

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    Arrange the following compounds in the increasing order of boiling point. Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol

    Butane -2-ol is

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