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CHEM1903 - Resources for Week 9

Topics and Learning Outcomes

  • 1st Law of Thermodynamics
    •  define the types of thermodynamic system
    •  recognise electrical, PV, surface, and elastic (spring) work
    •  express and explain the First Law of Thermodynamics, and use it to carry out energy balances
    •  define heat capacity and manipulate First Law heat capacity expressions
    •  define the terms exothermic and endothermic
    •  explain how a calorimeter and a chemical thermostat work
  • Enthalpy
    •  define enthalpy, and distinguish between CP and CV
    •  recognise and define the enthalpies of solution, formation, atomization, vapourization, condensation, fusion, sublimation and combustion
    •  use Hess’s Law to calculate the enthalpy of an unknown reaction from appropriate data, including standard enthalpies of formation, or estimate it from bond enthalpies
    •  define heat engine, thermodynaic cycle, and the efficiency of a heat engine
    •  recognise the difference between petrol and diesel engine cycles
    •  recognise and distinguish common fuel types, and discuss their advantages and disadvantages in different situations.
  • 2nd Law of Thermodynamics
    •  write down the Second Law of Thermodynamics
    •  define entropy, spontaneous processes and equilibrium
    •  use standard entropies to calculate ΔS for a reaction at standard conditions, and with standard enthalpies of formation, predict whether a reaction will be spontaneous under those conditions

Textbook and eBook References

  • Thermochemistry - Sections 8.1 and 8.3
  • First and Second Law of Thermodynamics - Sections 8.1, 8.3 and 8.4
  • 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 -  
  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 TWS
  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
  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 TWS
First and Second Law of Thermodynamics -  
  Thermodynamics overview  
Tags: thermodynamics  |  Contributed by Adam Bridgeman
  Thermodynamics tutorial  
Tags: thermodynamics  |  Contributed by Adam Bridgeman
Oxidation Numbers -  
Nitrogen Chemistry and Compounds -  

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