Chemical Energetics

3.1 Heats of Combustion, Neutralization, Reaction and Solution
Energy content of common fuels.
 * Wherever possible these terms should be introduced through experiments.

3.2
Simple energy level diagrams

3.3 Hess' Law
Experimental justification and simple calculations.
 * The relationship of Hess' law to energy level diagram and thermo-chemical cycles should be brought out.

3.4
Students should be made aware that delta-H is not the sole driving force in a reaction and that endothermic reactions proceed spontaneously. For reactions of gases (enthalpy of reaction at constant volume) and delta-H (enthalpy of reaction at constant pressure are not the same but the difference can be ignored. Most laboratory experiments are done at constant pressure and delta-H changes are measured.
 * Only delta-H is considered in this section.