Chemistry A-Level
Calculating enthalpy changes
What Calculating enthalpy changes means in Chemistry A-Level, as defined for OCR.
Definition of Calculating enthalpy changes
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Reference: OCR
Summing the average bond enthalpies of all bonds broken in the reactants and subtracting the sum of the average bond enthalpies of all bonds made in the products.
Topics that use Calculating enthalpy changes
- 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 Calculating enthalpy changes in the exam
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