Kinetics

• How doss concentration effect the rats of reaction?

  • More particles in a given volume
  • More frequent collisions, therefor More successful collisions occur
  • Rate of reaction increases
• How does surface area affect the rate of reaction?

  • More exposed particles available
  • So successful collisions occur more frequently
  • Rate of reaction increases
• How does temperature effects rate of reaction?

  • Particles have more energy and move faster
  • Larger number of collisions
  • Particles are more likely to have the activation energy, more successful collisions
  • Increasing the rate of reaction
• How does a catalyst effect the rate of reaction?

  • Lower the activation energy
  • More particles will have the Ea needed so more successful collisions occur
  • Increasing the rate of reaction
• Define a catalyst

  A substance that speeds up a reaction by providing an alternate pathway with a lower activation energy and isn't user up
• Rate equation (if amount of product is constant)

  $Rate =$$1/time$
• If the temperature increases how will it effect the maxwell boltzman distribution

  - Moves down and right
• If the temperature decreases how does it effect the maxwell boltzman distribution

  Moves up and left
• How would a catalyst effect the maxwell boltzman distribution

  • No effect on area under the curve
  • Higher number of molecules with the activitation energy
• If you halved the concentration or pressure then

  • The area under the curve is halved
  • But there are a lower number of particles with the activation energy
• Why does rate typically decrease over time?

  • Reactants get used up
  • Less frequent collisions to successfully collide
  • Decreasing the rate of reaction