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Useful links
• https://www.youtube.com/watch?v=-EFEfVDUp6M
• https://www.youtube.com/shorts/94tJhrni4_0
2025-026 Dr. Marwa El-Wakil 7
Stability of benzene
(ΔH)
The heat of hydrogenation
❑ Therefore, benzene is more stable by 36 kcal than would be
expected for a cyclic compound with 3 double bonds.
❑ This 36 kcal represents the extra stabilization of benzene due to
resonance
Resonance stabilization
energy of benzene.
2025-026 Dr. Marwa El-Wakil 8
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