1-5: Kinetics Flashcards
(9 cards)
1
Q
What must particles have in order to react?
A
- collide with sufficient activation energy
- collide in the correct orientation
2
Q
Do most collisions result in reaction?
A
No
3
Q
Define activation energy
A
The minimum energy a particle must collide with for a reaction to occur
4
Q
Describe a maxwells-boltsman curve
A
- curve with peak being most particles with most probable amount of energy
- tail end of peak with sufficient activation energy
- never touched x axis
- area under curve = no. Particles
- mean energy to the right of most probable amount
5
Q
What effect does increasing the temperature have on a M-B curve?
A
- horizontal stretch
- squash
- more particles with Ea
- fewer particles with the most probable energy
6
Q
Why does increasing the temperature increases rate of reaction
A
- in crease in number of particles with Ea on M-B curve
- increases effective collisions
- increases rate of reaction
7
Q
What is the effect of increasing concentration/ pressure on rate of reaction?
A
-increases rate of reaction
- more particles in a given volume
- more frequent collisions
- increases rate
(Doesn’t affect maxwell-Boltzmann
8
Q
How do catalysts increase rate of reaction
A
- provide an alternative reaction pathway with a lower activation energy
- more particles have >Ea so more frequent successful collisions result
- increased rate of reaction
9
Q
Which gasses are toxic?
A
- HCl
- SO2
