3.1.4Physical chemistry
Energetics
Enthalpy changes, calorimetry, Hess's law and bond enthalpies.
- Year 1 (AS)
- 4 lessons
- Exam practice and flashcards
- LESSON 1Enthalpy Changes
Standard enthalpy changes of reaction, formation, combustion, and neutralisation with enthalpy profile diagrams.
- LESSON 2Calorimetry
Experimental determination of enthalpy changes using q=mcΔT, apparatus setups, and sources of error.
- LESSON 3Hess's Law
Calculating enthalpy changes using cycles and Hess's Law cycles for formation and combustion data.
- LESSON 4Bond Enthalpies
Definition of mean bond enthalpies, calculating enthalpy changes from bond energies, and limitations.