Chem Topic 6

• How do we measure rate of reaction?

  Change in quantity / time
• How can we measure the volume of gas produced?

  By attaching a syringe to the reaction vessel
• How can we increase the rate of reaction?

  • Increase surface area/concentration/pressure : particles collide more frequently
  • Increase temperature: particles move faster, more collisions occur frequently with more energy
  • Catalyst reduces activation energy causing collisions to be more likely to be successful
• What is reversible reaction?


  A reaction where both the forward and reverse reaction will continuously take place

  E.g. the haber process
• What is Le Chatelier's principle?

  If a system at equilibrium is subjected to a change, the system will adjust to counteract the change.
• What does increasing the pressure do in a reaction?

  Favours the reaction that produces fewer moles