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20.1 Aromatic Hydrocarbons – Benzene

In this lecture, we cover 20.1 Aromatic Hydrocarbons from the 2nd Year Chemistry New Syllabus. This topic is highly important for understanding benzene, aromatic compounds and the fundamentals of organic chemistry.

📚 Topics Covered

Introduction to aromatic hydrocarbons Definition of aromatic compounds and arenes Benzene molecular formula C₆H₆ Structure of benzene August Kekulé’s structure Limitations of the Kekulé structure Modern structure of benzene Planar hexagonal structure sp² hybridization of carbon atoms Bond angles and bond lengths in benzene Sigma (σ) framework Pi (π) bond formation Delocalization of π electrons Thermodynamic stability of benzene Heat of hydrogenation Resonance energy / delocalization energy Why benzene is more stable than ordinary alkenes Equal C–C bond lengths in benzene Orbital structure of benzene

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