Now we have a system
at equilibrium again
and we disturb that equilibrium in some way.
We are not going to worry about what that disturbance is.
Say we add some more people. We are not going to worry about what that disturbance is.
Say we add some more people.
We change something about the ratio
when we disturb that system at equilibrium. We change something about the ratio
when we disturb that system at equilibrium.
What we see is that a new equilibrium is established.
So now this new equilibrium
has 4 people outside of the room and the rest of the people inside.
But the system had to respond to that
disturbance to the equilibrium.
Maybe we turned up the heat, maybe the music changed
maybe they ran out of food, something changed
To disturb that system which was at equilibrium
and it had to respond and at this point
equilibrium was restored. and it had to respond and at this point
equilibrium was restored.
There are many things that can effect a system at equilibrium.
All of these disturbances can happen to
reaction or to some system.
And the system will respond in such a way to minimize
this disturbance.
So we can look at a variety of topics and we will actually go through
examples of each of these, so we can see how they apply to
actual chemical reaction.
We can change the concentration of our reactant
or product.
We can change the pressure of the system
and we can change the pressure in two different ways.
One by changing the volume of the container
or the addition of an inert gas.
Remember that inert just means nonreactive.
And what we will find is that
that inert gas actually does not have any effect on the equilibrium.
We can also change the temperature
and we have to worry about is this an exothermic
process, where heat is being released
or is this an endothermic process
where heat is being consumed.
Because changes in temperature will affect
those reactions in different ways. Because changes in temperature will affect
those reactions in different ways.