factors affecting chemical equlibrium
Post on 16-Jan-2015
1.894 Views
Preview:
DESCRIPTION
TRANSCRIPT
Factors affecting chemical equilibrium.
Monday 10 April 2023
A + B C
DYNAMIC EQUILBRIUM
When substances A and B are mixed they react to form a substance C until a stable fixed concentration of the three substance exists.
At that stage the reactions continue but the concentrations do not change unless the conditions change
In the following slides the effects of changing the concentration,
temperature and pressure (gases only) are shown – the red and
blue arrows show which way the equilibrium moves as a change is
put into effect.
A + B C
CONCENTRATION EFFECT
ADD MORE
ADD MORE
A + B C
CONCENTRATION EFFECT
REMOVE
REMOVE
A + B C
TEMPERATURE EFFECT
ADD HEAT
REDUCE HEAT
+ (HEAT)
EXOTHERMIC
ENDOTHERMIC
A(g) + B(g) C(g)
PRESSURE EFFECT
2 gas molecules 1 gas molecule
ONLY APPLIES TO GASES
ADD PRESSURE
REDUCE PRESSURE
top related