- Continue your studies in the central science: CHEM1102 available in semester 1, 2 and in Summer School
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Enthalpy
Learning outcomes - after studying this topic, you should be able to:
- define the difference between internal energy and enthalpy
- draw enthalpy diagrams for endothermic and exothermic processes
- obtain the enthalpy change using a coffee-cup calorimeter
- define the enthalpy change for phase changes and for the formation, atomization and combustion of compounds
- use Hess's Law
- estimate atomization energies from bond enthalpies
- define standard states
- combine enthalpies of formation to work out the enthalpy change for chemical reactions
- combine enthalpies of reactions to work out the enthalpies of formation
- explain the advantages and disadvantages of different fuels
- work out the efficiency of fuels
Entropy
Learning outcomes - after studying this topic, you should be able to:
- explain the thermodynamic concept of spontaneity
- define entropy as the tendency of energy to spread out in a spontaneous process
- predict the relative entropy of solids, liquids and gases and how entropy is affected by temperature, molecular size and complexity
- define and use the Second Law of Thermodynamics
- relate the entropy change of the universe to the Gibbs free energy
- use Gibbs free energy to predict spontaneous and non-spontaneous processes
Textbook and eBook References
ChemCAL, iChem and Contributed Resources
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