The correct order of boiling points of the following isomeric amines is C4H9NH2, (C2H5)2NH, C2H5N(CH3)2

Question

The correct order of boiling points of the following isomeric amines is C4H9NH2, (C2H5)2NH, C2H5N(CH3)2 (A) C2H5N(CH3)2 > (C2H5)2NH > C4H9NH2 (B) (C2H5)2NH > C2H5N(CH3)2 > C4H9NH2 (C) C4H9NH2 > (C2H5)2NH > C2H5N(CH3)2 (D) (C2H5)2NH > C4H9NH2 > C2H5N(CH3)2

Tardigrade Admin · Accepted Answer

Order of Boiling points of amines:
Primary amines

(RN H_{2}) >

Secondary amines

(R_{2} N H) >

Tertiary amines

(R^{'} N R_{2})

Intermolecular hydrogen bonding is more in primary amines than that in secondary amines and nil in tertiary amines as there are no hydrogens attached to the nitrogen atom.

C_{4} H_{9} N H_{2} > (C_{2} H_{5})_{2} N H > C_{2} H_{5} N (C H_{3})_{2}

Q. The correct order of boiling points of the following isomeric amines is
$C_{4} H_{9} N H_{2}$ , $(C_{2} H_{5})_{2} N H$ , $C_{2} H_{5} N (C H_{3})_{2}$

$C_{2} H_{5} N (C H_{3})_{2} > (C_{2} H_{5})_{2} N H > C_{4} H_{9} N H_{2}$

$(C_{2} H_{5})_{2} N H > C_{2} H_{5} N (C H_{3})_{2} > C_{4} H_{9} N H_{2}$

$C_{4} H_{9} N H_{2} > (C_{2} H_{5})_{2} N H > C_{2} H_{5} N (C H_{3})_{2}$

$(C_{2} H_{5})_{2} N H > C_{4} H_{9} N H_{2} > C_{2} H_{5} N (C H_{3})_{2}$

Q. The correct order of boiling points of the following isomeric amines is C4​H9​NH2​, (C2​H5​)2​NH, C2​H5​N(CH3​)2​

C2​H5​N(CH3​)2​>(C2​H5​)2​NH>C4​H9​NH2​

(C2​H5​)2​NH>C2​H5​N(CH3​)2​>C4​H9​NH2​

C4​H9​NH2​>(C2​H5​)2​NH>C2​H5​N(CH3​)2​

(C2​H5​)2​NH>C4​H9​NH2​>C2​H5​N(CH3​)2​

Q. The correct order of boiling points of the following isomeric amines is
$C_{4} H_{9} N H_{2}$ , $(C_{2} H_{5})_{2} N H$ , $C_{2} H_{5} N (C H_{3})_{2}$

$C_{2} H_{5} N (C H_{3})_{2} > (C_{2} H_{5})_{2} N H > C_{4} H_{9} N H_{2}$

$(C_{2} H_{5})_{2} N H > C_{2} H_{5} N (C H_{3})_{2} > C_{4} H_{9} N H_{2}$

$C_{4} H_{9} N H_{2} > (C_{2} H_{5})_{2} N H > C_{2} H_{5} N (C H_{3})_{2}$

$(C_{2} H_{5})_{2} N H > C_{4} H_{9} N H_{2} > C_{2} H_{5} N (C H_{3})_{2}$