Le Chatliers Principle Flashcards
1
Q
Principle states:
A
When a stress is applied to a system in dynamic equilibrium, the equilibrium will shift to relieve the stress
2
Q
List the three stresses:
A
- Concentration
- Temperature
- Volume/Pressure
3
Q
Concentration
A
+ reactants-shifts right
+ products-shifts left
-reactants-shifts left
-products-shifts right
4
Q
Temperature
A
Add heat(increase temp.)-shifts away from heat in equation Remove heat(decrease temp.)-shifts toward heat
5
Q
Volume/Pressure
A
Only for gases. Only works when number of moles of gas diff. Across the arrow Decrease Volume(increase pressure)-shifts to side with least moles of gas Increase Volume(decrease pressure)-shifts to side with most moles of gas
6
Q
1.add hydrogen
A
Right
7
Q
- Remove water
A
Right
8
Q
3.add heat
A
Left(based on example in notes)
9
Q
Decrease volume
A
Right
10
Q
Add catalyst
A
No shift
11
Q
Add helium gas
A
No shift
