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Completely anhydrous acetic acid has mol...

Completely anhydrous acetic acid has molecular mass of 120. Explain.

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In the vapour state, acetic acid exists as a dimer due to intermolecular hydrogen bonding. Therefore, its molecular mass is 120. For details consult section 16.
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Knowledge Check

  • Anhydrous formic acid is prepared by

    A
    heating NaOH with CO at `210^@C` under pressure
    B
    heating glycerol with oxalic acid at high temperature
    C
    catalytic oxidation of ethane in presence of a catalyst
    D
    heating lead formate in a current of hydrogen sulphide.

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    A
    an aldehyde
    B
    an acid
    C
    an alcohol
    D
    an ether.

  • Anhydrous formic acid is prepared by:

    A
    heating NaOH with CO at 483K under pressure
    B
    heating glycerol with oxalic acid at high temperature
    C
    catalytic oxidation of ethane in presence of a catalyst
    D
    heating lead formate in a current of hydrogen sulphide

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