Covalent Molecules 4: Aromatic Chemistry Flashcards
1
Q
Describe the electrons in benzene.
A
Delocalised
2
Q
Describe the bond lengths in benzene.
A
All bond lengths are exactly the same
1.39A (Angstroms)
3
Q
Describe the hybridisation of orbitals in benzene.
A
Benzene contains unhybridised p orbitals
4
Q
Describe the physical properties of benzene.
A
Liquid
Carcinogenic
Good solvent
Low boiling point
5
Q
Why is benzene carcinogenic?
A
It is planar due to presence of double bonds
When it comes into contact with skin it can pass through the cell
Doesn’t dissolve in water so can move about the cell - could pass into DNA and disrupt DNA structure, causing mutations
6
Q
Why are aromatic compounds more stable than alkenes and alkynes?
A
Because of the delocalisation of the electrons in p-orbitals across the entire compound
