factors affecting rate of reaction

• factors affecting rate of reaction:

  • temperature
  • concentration of reactants
  • pressure
  • surface area
  • catalyst
• temperature:

  • increasing temperature increases kinetic energy of particles
  • so, particles move at faster rate
  • so, more frequent, successful collisions
• concentration:

  • increasing concentration means more particles are in a fixed volume
  • so, more frequent successful collision between particles
• pressure:

  • increasing pressure means same number of particles in smaller area
  • so, more frequent successful collisions between particles
• surface area:

  • breaking solid reactant into pieces increases surface area to volume ratio
  • particles will have more are to move
  • so, more frequent successful collisions
• catalyst:

  • speeds up reaction
  • is not used iup in reaction
  • decrease activation energy
  • provide alternate reaction pathway with lower activation energy