Question
Chemistry Question on Alcohols, Phenols and Ethers
The correct order of boiling points of N-ethylethanamine(I), ethoxyethane(II) and butan-2-ol(III) is
A
III<II<I
B
II<III<I
C
II<I<III
D
III<I<II
Answer
II<I<III
Explanation
Solution
Butan-2-ol exhibits stronger hydrogen bonding compared to N-ethylethanamine. On the other hand, ethoxyethane displays dipole interactions, which are weaker than hydrogen bonding. Therefore, the order is :
ethoxyethane < N-ethylethanamine < butan-2-ol.
So, the corrrect option is (C) : II<I<III