Calorimetry

• Calorimetry: the process of using a calorimeter to measure the change of energy, using an isolated system
• Isolated System: neither energy nor matter can be exchanged outside of the system
• Calorimeter: a device that is an isolated system used to measure energy changes
• Calorimeter assumptions:

  • the total system is isolated
  • all the material of the system is conserved
  • specific heat capacity for water over temperature range is 4.19
  • specific heat capacity for all dilute aqueous solutions is 4.19
  • density for all dilute aqueous solutions is the same as water
  • container, lid, thermometer, stirrer do no gain or lose thermal energy
• Bomb Calorimeter: Encloses a combustion reaction (and/or reactions that do not occur in a solution) inside a sealed container before placing inside calorimerer
• C = heat capacity (J/c or KJ/c)

  • combines mass and specific heat capacity together