Topic D: Thermochemistry
- Page ID
- 169988
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Learning Objectives
WHAT YOU SHOULD BE ABLE TO DO WHEN YOU HAVE FINISHED THIS TOPIC:
- Know the meaning of heat and work, and their relationship to energy (the First Law of Thermodynamics).
- Relate temperature changes and changes of state to the corresponding amounts of heat, using specific heats, heats of fusion, and heats of vaporization.
- Use standard calorimetric data (temperatures, masses, and specific heats) to calculate ΔE and ΔH for a reaction.
- Interconvert ΔE and ΔH for a reaction, and calculate the pressure-volume work that occurs under constant-pressure conditions.
- Calculate the heat produced by a reaction under constant-pressure or constant-volume conditions, given the masses of reactants and either ΔE or ΔH for the reaction.
- Understand the meaning of enthalpy of formation (ΔHf) and use enthalpies of formation to calculate ΔH for a reaction.
- Use Hess’s Law to calculate ΔH for a reaction, given appropriate ΔH values for other reactions.
- Understand the relationship between changes in chemical potential energy and the energy of a reaction.