Questions I Got Wrong

Question 1

Describe the structure and bonding of a benzene molecule

Answer 1

• p- orbitals overlap above and below the ring
• form pi bonds
• ring is planar
• lengths of bonds are equal
• bond angle 120

Question 2

Describe and explain how a molecule of bromine acts as an electrophile.

Answer 2

Electron pair acceptor

Question 3

Explain why bromine reacts much more readily with cyclohexene than it does with benzene

Answer 3

• benzene is more stable
• electrons are delocalised
• bezene has lower charge density
• bromine is less susceptible to electrophiles

Question 4

The compound IBr reacts with benzene in an electrophilic reaction. Which compound would be the main product of this reaction, iodobenzene or bromobenzene?

Answer 4

• iodobenzene because Br is more electronegative than I so will be delta positive