IB syllabus > energetics ((sl) > 6.1 

These notes were written for the old IB syllabus (2009). The new IB syllabus for first examinations 2016 can be accessed by clicking the link below.

IB syllabus for first examinations 2016

5.1 - Exothermic and endothermic reactions

5.1.1: Define the terms exothermic reaction, endothermic reaction and standard enthalpy change of reaction (? HØ).

Standard enthalpy change is the heat transferred under standard conditions - pressure 101,3kPa, temperature 298K. Only ? H can be measured, not H for the initial or final state of a system




5.1.2: State that combustion and neutralisation are exothermic processes





5.1.3: Apply the relationship between temperature change, enthalpy change adn the classification of a reaction as exothermic or endothermic





5.1.4: Deduce from an enthalpy level diagram the relative stabilities of reactants and products and the sign of the enthalpy change for the reaction.