Rate Of Reaction Flashcards
1
Q
Equation for Rate
A
rate = change
————–
time (s)
2
Q
How can you tell the speed of the reaction by looking at the graph
A
the steeper the
gradient the faster the rate of reaction
3
Q
How does Concentration affect rate
A
- more concentrated
- more particles
- more frequent collisions
4
Q
How does pressure affect rate
A
- more pressure (gases)
- particles closer together
- more frequent collisions
5
Q
How does temperature affect rate
A
- higher temp
- particles have more energy
- particles move faster
- more frequent collisions (and harder ones with more energy - more likely to have the
activation energy
6
Q
How does surface area affect rate
A
- smaller pieces
- more surface area
- more exposed particles
- more frequent collisions
7
Q
How does a catalyst affect rate
A
- lowers activation energy
- more collisions now have activation energy
