Bond enthalpy
What Bond enthalpy means in Chemistry A-Level, as defined for AQA, OCR.
Definitions of Bond enthalpy
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Reference: OCR
The enthalpy change when one mole of a specified covalent bond is broken in gaseous molecules, so it is always endothermic and positive.
The energy required to break one mole of a specific bond in the gaseous state.
Topics that use Bond enthalpy
- Nucleophilic properties (A-level only) (AQA A-Level)
- Enthalpy changes (OCR A-Level)
Related terms
- ∆H of combustion
- ∆H of formation
- Activation energy
- addition-elimination
- amide formation
- anhydride versus acyl chloride
- Approximate estimate
- attack at a δ⁺ carbon
Using Bond enthalpy in the exam
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