Topic 9-kinetics Flashcards
1
Q
Increasing temp in the curve
A
peak shifts to right+lower
as temp increase there are more molecules with more energy
2
Q
Use of catalyst in industry
A
Increase the rate it reaches equilibrium
less energy so lowers cost
3
Q
Rate of reaction
A
Initial rate is slow due to high activation E
Rate increase as ions acting as catalyst forms
Decrease again as reactants used up
4
Q
Catalyst
A
Warmed to overcome activation E
Reaction exothermic so bonds break
5
Q
Heterogeneous catalyst
A
- Adsorb onto surface
- active sites
- bonds weakened
- desorb
6
Q
Rate
A
Initial=tangent at 0
Max=tangent at steepest part of graph
7
Q
Effect of temp
A
-less kinetic E
-less with energy greater than AE
8
Q
Experiment to see catalyst
A
filter solid and dry
reweigh
repeat
9
Q
Solid catalyst
A
Provides surface for reaction
10
Q
Initial rate
A
Less accurate as difficult to judge where the tangent is
