Rates of reaction

• Temperature

  Higher temperature increases the rate of reaction
• Factors which affect the rates of chemical reactions
• Factors

  • Temperature
  • Concentration/Pressure
  • Surface Area
  • Catalysts
• Particles collide with more energy

  More likely to exceed activation energy
• Concentration/Pressure

  Higher concentration/pressure increases the rate of reaction
• Higher temperature


  Particles gain more energy and move faster, colliding more frequently
• Concentration/Pressure

  More particles per volume, colliding more frequently
• Catalysts


  Lower the activation energy, more successful collisions
• Surface Area

  High surface area to volume ratio, much higher area for collision to occur
• Catalysts


  Speed up a reaction without being used, not included in the equation