Author Question: Why does benzene have a much higher boiling point (80 C) than hexane (69 C), even though they have ... (Read 73 times)

nramada · **on:** Jul 8, 2021

Question 1

Which two simple functional groups make carboxyl group?
◦ aldehyde and keto groups
◦ aldehyde and hydroxyl groups
◦ keto and hydroxyl groups
◦ ester and hydroxyl groups
◦ ester and ether groups

Question 2

Why does benzene have a much higher boiling point (80 °C) than hexane (69 °C), even though they have the same number of carbons?
◦ Benzene has fewer hydrogens than hexane.
◦ Benzene is much more polar than hexane which enhances the attractive forces between molecules and raises the boiling point.
◦ Benzene is planar and has delocalized electron density which increases the attractive forces between molecules and raises the boiling point.
◦ Hexane has more Kekulé structures than benzene.
◦ Benzene can covalently bond to another benzene molecule which increases its boiling point.

Dominic · **Reply #1 on:** Jul 8, 2021

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