Kinetics

Question 1

what is collision theory?

Answer 1

• particles must collide with sufficient energy and the correct orientation
• the energy of the particles must be greater than or equal to the activation energy

Question 2

list 4 factors that increase the rate of reaction

Answer 2

• increase concentration
• increase pressure (GAS ONLY)
• increase temperature
• use of a catalyst

Question 3

what does the highest point on a maxwell - boltzmann distribution represent?

Answer 3

most probable energy

Question 4

how does a maxwell - boltzmann distribution curve change when temperature is increased?

Answer 4

• peak shifts right and is lower
• more particles have energy greater than or equal to the activation energy

Question 5

how does a maxwell - boltzmann distribution curve change when a catalyst is added? why?

Answer 5

• activation energy line shifts to left so more particles have energy greater than or equal to the activation energy
• catalyst provides alternative pathway for reaction that requires less energy so more particles have energy greater than or equal to the activation energy

Question 6

how does a maxwell - boltzmann distribution curve change when concentration is increased?

Answer 6

• peak is higher up but still starts at same point
• more particles have energy greater than or equal to the activation energy