Bond Dissociation Enthalpy | GOC | IIT JEE/NEET l Chemistry | Abhishek Kr. ( CAB Sir )

Описание: Bond Dissociation Enthalpy (BDE) in General Organic Chemistry (GOC) is the energy needed to break a specific covalent bond homolytically (one electron to each atom) in the gas phase, forming radicals, and measures bond strength; higher BDE means stronger bonds, influencing reaction rates and pathways by showing which bonds break first, often seen in reactions like halogenation or free radical additions, with stability of radicals (resonance/hyperconjugation) lowering BDE.

Key Concepts in GOC

Definition: Energy to break A-B → A• + B• in the gas phase (kJ/mol).

Bond Strength: Higher BDE = Stronger Bond.
Homolytic Cleavage: Bond breaks symmetrically, creating radicals (e.g., CH₃-H → CH₃• + H•).

Context in Reactions: BDE helps predict which bonds break first in a reaction, determining reaction mechanism and rate.



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