Chemistry A-Level
enthalpy profiles
What enthalpy profiles means in Chemistry A-Level, as defined for AQA.
Definition of enthalpy profiles
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Reference: AQA
On these the products sit below the reactants for an exothermic change and above them for an endothermic one, and both still show an activation energy hump.
Topics that use enthalpy profiles
- Enthalpy change (AQA A-Level)
Related terms
- bond breaking is endothermic
- bond making is exothermic
- constant pressure
- enthalpy change
- per mole quantities
- products minus reactants
- sign of ∆H
Using enthalpy profiles in the exam
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