00:01
Hello students, so in this video we are going to talk about le chatelier's principle.
00:08
So it states that if a dynamic equilibrium is disturbed, how? so, by changing the conditions, the position of the equilibrium shifts to counteract the change to re -establish an equilibrium.
01:05
So equilibrium will always try to re -establish itself by shifting its direction.
01:11
So let us use this principle and see what will happen to this reaction.
01:19
So we have 2 no2 gas reacting to form n2o4 gas.
01:26
When the delta h of this is minus 58 kj, that means it is an exothermic reaction, that means it will give off heat.
01:35
So heat is one of the product.
01:37
So what will happen if we change certain conditions to the equilibrium of this reaction? so the first thing that we are going to do is, we are going to do addition of n2o4.
01:53
So what will happen is, the reaction will shift to left.
02:11
Why? to reduce n2o4 to re -establish equilibrium.
02:27
Now second is addition of a catalyst.
02:33
So what does a catalyst do? a catalyst speeds up both the forward and backward reaction equally.
02:58
So there will be no change in the equilibrium as it is affecting both the directions equally...