**3.1.5 Kinetics** Flashcards
1
Q
What must particles do in order to react?
A
- Collide w/ activation energy.
- Correct orientation.
2
Q
Do most collisions result in a reaction?
A
- No.
3
Q
Define activation energy.
A
- Minimum energy that particles must collide w/ for a reaction to occur.
4
Q
What is the effect of raising temp on RofR?
A
- Increased RofR.
- More particles have activation energy ∴ more successful collisions per sec.
5
Q
What is the effect of raising conc. / pressure on RofR?
A
- More particles in given volume ∴ more frequent successful collisions.
6
Q
What is a catalyst?
A
- Substance that increases RofR but not used up in recation.
7
Q
How do catalysts work?
A
- Provide alternative reaction pathway w/ lower Ea.
- ∴ more particles have Ea ∴ higher RofR.
8
Q
What are the units of RofR?
A
- mol/dm3/sec.
- mol/dm3/min.
9
Q
What is the equation for RofR?
A
- Change in amount of products or reactants / time.
