Which of the following should be most volatile ? – InterviewSolution

1.	Which of the following should be most volatile ?
Answer» II IV I III Solution :Among the isomeric AMINES, TER. amines have the lowest b.p. due to absence of intermolecular hydrogen bonding. thusoutof `CH_3 CH_2 CH_2NH_2 ` . and `(CH_3)_3N, (CH_3)_3 N` is the most volatile. However, due to polar nature of C-N bonds `(CH_3)_2 N` is more polar than `CH_3 CH_2 CH_3`. Therefore, due to weak dipole-dipole interactions, `(CH_3)_3 N` has HIGHER boiling point or is less volatile than `CH_3 CH_2 CH_3`. Hence, `CH_3 CH_2 CH_3`is most volatile among the given COMPOUNDS.

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