NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Compare the boiling points of 1 . n-butylamine 2 . n-butyl alcohol 3 . pentane
Options
- A2 > 3 > 1
- B2 > 1 > 3
- C1 > 3 > 2
- D3 > 2 > 1
Correct answer
B. 2 > 1 > 3
Step-by-step solution
N is less electropositive 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