Kinetics

• What does the collision theory state? And it’s two fundamental ideas

  • collision states that atoms must collide with sufficient energy to break bonds (also known as activation energy)
  • The atoms must collide with the right orientation
• what is the definition of activation energy.

  It is the minimum amount of energy needed for particles to collide with sufficient energy to start a reaction.
• What are factors affecting rate of reaction?

  • temperature
  • Concentration of solution
  • Pressure
  • Increase Surface area
  • Catalyst
• Why might not all particles react

  may not have enough energy or right orientation
• What is the top position of an enthalpy diagra?

  transition state
• What does the Maxwell Boltzmann distribution tell u?

  it tells you spread of energy of the molecules at a particular temperature or condition.
• What are the key components of a Maxwell Boltzmann distribution graph. B

  -no particles have 0 energy so starts at 0

  -the tip of the graph represents the most probable energy where most of the molecules have that energy

  -the average energy is in the middle where it is to the right to the graph

  -only few molecules have energy greater than activation energy.

  
• Describe and draw the Maxwell Boltzmann distribution graph.

  :

  
• Describe what happens to the maxwell boltman distribution graph change when increase temperature

  -total area of the curve increase

  -there are greater number of particles with energy greater than the activation energy

  -the peak of the curve moves down and Moves to the right

  -total area of the curve increase

  -there are greater number of

  particles with energy greater than the activation energy

  -the peak of the curve moves down and Moves to the right

  
• Give the definition of the a catalyst

  -increases the rate of reaction without being used up

  -by giving an alternative route with a

  -lower activation energy
• What does the activation energy do to the maxwell boltsmon distribution graph.

  -the activation energy moves to the left

  -that mean there is greater number of particles with energy equal or greater than Ea

  
• What are the catalyst made of and how do they look? In a cars exhaust pipe

  -honeycomb made of material made from platinum and rhodium metal