Kinetics

• What are the factors effecting ROR

  1. temperature
  2. , concentration ,
  3. surface area / decreasing particle size,
  4. adding a catalyst,
  5. using a light source in certain reactions only,
  6. increasing pressure in gaseous reactions only
• How does temperature effect ROR

  1. Increase speed of particles
  2. more kinetic energy
  3. average energy of the particles is increased above activation energy
  4. more successful collisions per second
• When asked to describe a graph that looks directly proportional

  Say the graph shows a straight line graph through the origin
• How does surface area increasing a factor rate of reaction?

  1. More particles on the surface that collide
  2. more frequent successful collisions per second
• How does concentration affect rate reaction?

  1. More particles per unit volume so are closer together
  2. more frequent collisions
  3. more particles have more successful collisions per second
  4. Increased ROR
• Define the term rate of reaction

  Change in concentration of a reactant per unit of time