1.5 Kinetics Flashcards
1
Q
What must particles do in order to react?
A
Collide with sufficient activation energy
2
Q
Do most collisions invoke a reaction?
A
No
3
Q
What is activation energy?
A
The minimum energy that particles must collide with for a reaction to occur
4
Q
What is the effect of increasing the temperature of a reacton?
A
- Increased Rate of Reaction
- Much higher proportion of particle have activation energy
- Many more successful collisions
5
Q
What is the effect of increasing concentration/pressure on a reaction?
A
- Increased Rate of Reaction
- More particles in a given volume - more frequent successful collisions
6
Q
What is a catalyst?
A
A substance which increases the rate of reaction but is not used up in the reaction
7
Q
How do catalysts work and how do they increase the rate of reaction?
A
1.Provides an alternative reaction pathway
2.Lowers activation energy so more particle have activation energy
3. So, more frequent collisions
