rates

• 3 types of enthalpy:

  1. combustion
  2. formation
  3. neutralisation
• precipitations reactions are...

  • instantaneous
  • because of high frequency of ions
  • high collision frequency
• collision theory: for a reaction to occur, particles must collide with sufficient energy and with the correct orientation (where the bond needs to occur)
• rate = change in conc. / time

  the units are: moldm-3 s-1