Chemistry A-Level
Energy balance in reactions
What Energy balance in reactions means in Chemistry A-Level, as defined for OCR.
Definition of Energy balance in reactions
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Reference: OCR
The total energy absorbed in breaking bonds in the reactants is compared with the total energy released in making bonds in the products to classify the overall reaction.
Topics that use Energy balance in reactions
- Enthalpy changes (OCR A-Level)
Related terms
- ∆H of combustion
- ∆H of formation
- Activation energy
- Approximate estimate
- Average bond enthalpy
- Averaging over gaseous compounds
- Bond breaking and bond making
- Bond enthalpy
Using Energy balance in reactions in the exam
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