Compare the boiling points of 1. n-butylamine 2. n-butyl alcohol 3. pentane

Question

Compare the boiling points of 1. n-butylamine 2. n-butyl alcohol 3. pentane (A) 2 > 3 > 1 (B) 2 > 1 > 3 (C) 1 > 3 > 2 (D) 3 > 2 > 1

Tardigrade Admin · Accepted Answer

N is less electronegative than O, therefore, the H-bonds in the amine (1) are weaker than those in n-butyl alcohol. H-bonding is not possible in pentane (3). Here the boiling point order is as follows
(2) n-butyl alcohol > (1) n-butylamine > (3) pentane

Q. Compare the boiling points of 1. n-butylamine 2. n-butyl alcohol 3. pentane

2 > 3 > 1

2 > 1 > 3

1 > 3 > 2

3 > 2 > 1

N is less electronegative than O, therefore, the H-bonds in the amine (1) are weaker than those in n-butyl alcohol. H-bonding is not possible in pentane (3). Here the boiling point order is as follows (2) n-butyl alcohol > (1) n-butylamine > (3) pentane

Q. Compare the boiling points of
$1.$ n-butylamine
$2.$ n-butyl alcohol
$3.$ pentane

N is less electronegative than O, therefore, the H-bonds in the amine (1) are weaker than those in n-butyl alcohol. H-bonding is not possible in pentane (3). Here the boiling point order is as follows
(2) n-butyl alcohol > (1) n-butylamine > (3) pentane