Calorimetry

• How can a simple calorimeter be made

  From a polystyrene cup and lid, a beaker, and a thermometer
• What is specific heat capacity

  • The amount of energy needed to increase the temperature of 1 g of a substance by 1°C is called the specific heat capacity (c ) of the liquid
  • The specific heat capacity of water is 4.18 J g-1 K-1
• Equation for energy transferred as heat

  q=mc^T
• What are the advantages of using a bomb calorimeter

  Minimises heat loss, pure oxygen used, thus ensures complete combustion
• How is enthalpy change calculated

  ^H=q/n