The actual energy involved in breaking and forming the individual bonds will be different from the average bond enthalpies given in the data book, since these have been calculated in different chemical environments. All species need to be gaseous molecules.
Limitations of Bond Enthalpy Calculations
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Specification: OCR Chemistry A (H032), AS-level, 3.2.1 Enthalpy changes. Topic: Enthalpy.
More in Enthalpy
- Determining the Enthalpy Change of a Reaction
- Cooling Curves
- Average Bond Enthalpy
- Calculating Enthalpy Changes from Bond Enthalpies
- Hess's Law
- Determination of Enthalpy Change of a Reaction from Enthalpies of Formation Using Hess's Law
- Determination of Enthalpy Change of a Reaction from Enthalpies of Combustion using Hess's Law
- Exam-style Question
All 19 lessons in Enthalpy · All OCR AS-level Chemistry topics