1
Q
give three pieces of evidences that contradict the old benzene model
A
- did not react with bromine like other alkenes
- Carbon, carbon double bonds and single bonds are not the same length
- enthalpy of hydrogenation for benzene was predicted to be -357, enthalpy of cyclohexene was -119
2
Q
how did scientists prove that the bonds in benzene were the same lenghts
A
- x ray crystallography
- showed that the 6 carbon- crabon bonds were the same length
3
Q
A
