3.1.5- Kinetics Flashcards
What must occur for a reaction to happen
Particles must collide with sufficient energy
What happens if there is not sufficient energy
Have elastic collisions so energy is conserved and redistributed
What is activation energy
Minimum amount of energy required for a successful collision
What do some molecules need for a reaction to take place
Correct orientation
Draw maxwell boltzman distribution curve
Draw
Explain 3 points of a maxwell Boltzmann graph
No molecules have 0 energy so goes through 0,0
Area underneath curve is equal to total number of molecules
Only a few molecules have a very high energy but there is no maximum energy the curve is asymptotic to x axis
Define rate of reaction
The change of concentration lot a reactant or products per unit time
What happens when you increase and decrease temperature
Increase temperature the rate of reaction increases
Decreases temperature the rate of reaction decreases
Show a maxwell Boltzmann graph for a change in temperature
Draw
Show a reaction rates graph when temperature increases
Draw
Why is there a larger area under maxwell Boltzmann graph when temperature increases
At a higher temperature there are many more molecules with sufficient energy therefore many more productive collisions.
Show a graph when concentration is increased
Draw
Why does the graph level off quicker with a higher concentration
If concentration is increased it reaches maximum yield quicker because more successful collisions are taking place
Show maxwell Boltzmann graph for higher concentration
Draw
Explain maxwell Boltzmann graph when increasing concentration
Higher concentration means it increases the total number of molecules therefore area underneath curve is greater
Number of molecules with Ea or greater increase therefore there are more successful collisions
