Collision theory Flashcards
1
Q
Two requirements
A
- Sufficient energy: Spontaneous (Na in H2O) or adding (heating)
- Correct orientation
2
Q
Activation energy
A
Minimum energy required for potential of a reaction to occur
3
Q
Factors affecting rate of reaction
A
- Concentration
- Temperature
3/ Pressure - SA
- Catalyst
4
Q
Concentration
A
More particles in same volume = more frequent collisions
5
Q
Temperature
A
Increased energy= more particles can overcome Ea and more frequent collisions
6
Q
Pressure
A
Increased concentration, decrease volume= more collisions
7
Q
SA
A
More chance to react
8
Q
Catalyst
A
Lower Ea = more particles can overcome (Ea)
9
Q
Rely on increased collision freq for higher rr
A
- SA
- Concentration
- Gas pressure
10
Q
Overall effect
A
1/ Greater number of collisions
2. Increased probability that any collision will be successful
