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CHEM1101 - Resources for Week 9

Topics and Learning Outcomes

  • Thermochemistry
    •  define system, surroundings and universe for simple thermodynamic processes
    •  explain the difference between heat and temperature
    •  use the First Law of Thermodynamics to calculate the change in internal energy accompanying heating and expanding an ideal gas
    •  relate temperature and heat change using specific and molar heat capacities
    •  calculate internal energy changes using the bomb calorimeter
  • Enthalpy
    •  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
  • Nitrogen Chemistry and Compounds
    •  explain the difference between a fuel and an explosive
    •  explain the concept of activation energy
    •  work out the oxidation number of nitrogen in its compounds
    •  work out the shapes and the number of unpaired electrons on nitrogen oxides and halides
    •  discuss the NOx cycle in the atmosphere
    •  explain how the temperature of a planet without a greenhouse effect can be calculated
    •  comment on the evidence for global warming and the most important greenhouse gases

Textbook and eBook References

  • Thermochemistry - Sections 8.1, 8.3 and 8.4
  • First and Second Law of Thermodynamics - Sections 8.3 - 8.6
  • Oxidation Numbers - Section 12.1
  • Nitrogen Chemistry and Compounds - Sections 14.1 - 14.3
the eBook references are free and are taken from high quality sources.

Lecture Notes, Tutorial Worksheets & Answers and Suggested Exam Questions

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ChemCAL and iChem Resources

Contributed Links and Resources

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Thermochemistry -  
  Mythbusters Thermite Explosion  
Description: Mythbusters show that steam explosion can be caused by rapid heating by thermite reaction. Hess''s Law Fail at 6:40
Contributed by Tim Schmidt
  Heat, temperature and heat capacity (short video tutorial)  
Description: The difference between heat and temperature and how to relate them using heat capacity.
Tags: heat capacity | heat  |  Contributed by Adam Bridgeman
First and Second Law of Thermodynamics -  
  Thermodynamics tutorial  
Tags: thermodynamics  |  Contributed by Adam Bridgeman
  Thermodynamics overview  
Tags: thermodynamics  |  Contributed by Adam Bridgeman
Oxidation Numbers -  
  How to assign oxidation numbers  
Tags: Oxidation numbers | oxidation states  |  Contributed by Adam Bridgeman
Nitrogen Chemistry and Compounds -  
Nitrogen in the Atmosphere -  
  BBC Podcast on Global Warming  
Description: New findings show that local warming in antarctic triggered CO2 release which caused catastrophic global warming in Eocene.
Contributed by Tim Schmidt

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