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Chemistry LibreTexts

Chapter 7: Thermochemistry

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  • 7.1: Nature of Energy
    kinetic and potential energy, units of energy, defining work and heat, defining system and surroundings
  • 7.2: First Law of Thermodynamics
    internal energy, change in internal energy, defining endo- and exothermic, state function, sign conventions for work and heat
  • 7.3: Enthalpy
  • 7.4: Standard Enthalpy of Formation
  • 7.5: Calorimetry
    Calorimetry measures enthalpy changes during chemical processes, where the magnitude of the temperature change depends on the amount of heat released or absorbed and on the heat capacity of the system. It uses devices called calorimeters, which measure the change in temperature when a chemical reaction is carried out. The magnitude of the temperature change depends on the amount of heat released or absorbed and on the heat capacity of the system.
  • 7.6: Hess’s Law
    Hess’s law allows us to combine reactions algebraically and then combine their enthalpy changes the same way.


Chapter 7: Thermochemistry is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts.

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