Resources
AS Chemistry
Unit 2.1 – Enthalpy changes in chemistry
Knowledge & Skills:
- drawing energy profile diagrams for endo/exothermic reactions showing activation energies
- recalling and using definitions for enthalpy of formation/combustion /neutralisation and average bond enthalpy
- writing equations as examples of these enthalpy changes
- recalling Hess’s law, constructing Hess cycles and using them to calculate enthalpy changes
- briefly reviewing how an accurate enthalpy change for an aqueous reaction is measured in a laboratory using ΔH=mCΔT