Discussion
The increasing order of boiling point of the following amines is
Answer: A
The increasing order is \(\mathrm{C_2H_5N(CH_3)_2 \lt (C_2H_5)_2NH \lt C_4H_9NH_2}\).
The three amines are isomers (C4H11N), so their boiling points depend on intermolecular hydrogen bonding. A primary amine has two N-H hydrogens and bonds most strongly; a secondary amine has one; a tertiary amine has none.
So the tertiary amine boils lowest, then the secondary, then the primary. The other orders place the tertiary amine above an amine that can hydrogen-bond, or put the secondary above the primary.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development