Chemistry A-Level
Unchanged enthalpy change of reaction
What Unchanged enthalpy change of reaction means in Chemistry A-Level, as defined for OCR.
Definition of Unchanged enthalpy change of reaction
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Reference: OCR
A catalyst does not change the overall enthalpy change of the reaction, so reactants and products occupy the same levels on the profile.
Topics that use Unchanged enthalpy change of reaction
- Reaction rates (OCR A-Level)
Related terms
- Activation energy
- Alternative reaction pathway
- Boltzmann distribution
- Catalysis and activation energy
- Catalyst examples
- Catalyst regenerated and not consumed
- Catalyst regenerated in the mechanism
- collision frequency
Using Unchanged enthalpy change of reaction in the exam
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