48
Question
Which of the following should be most volatile?
I)CH3CH2CH2NH2
II) (CH3)3N
III)
IV) CH3CH2 CH2 CH3
I)CH3CH2CH2NH2
II) (CH3)3N
III)
IV) CH3CH2 CH2 CH3
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Solution
The correct option is B IV
Primary and Secondary amine due to intermolecular H-bonding have higher boiling point and hence less volatile than tertiary amine and hydrocarbon. 30 amines have higher boiling due to polar nature than hydrocarbons. Hydrocarbon have weak dipole-dipole interactions and hence the boiling point is less and are more volatile.
IV
Primary and Secondary amine due to intermolecular H-bonding have higher boiling point and hence less volatile than tertiary amine and hydrocarbon. 30 amines have higher boiling due to polar nature than hydrocarbons. Hydrocarbon have weak dipole-dipole interactions and hence the boiling point is less and are more volatile.
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