00:01
It might be helpful to have a generic reaction that has a delta n value that is equal to negative 1.
00:08
If we have a gas plus b gas goes to c gas, then we've got one gas being produced from two gases.
00:26
So delta n will be 1 minus 2 or negative 1.
00:30
Then k is going to be equal to the concentration of c divided by the concentrations of a and b.
00:46
So if we increase the volume, increasing volume always allows the equilibrium to shift to the side with more moles of gas, which is going to be to the left.
01:00
It shifts to the side with more of gas because when we increase the volume, we decrease the concentration of everything.
01:10
So our q value, when we increase the volume, is going to end up being greater than k initially.
01:21
With it being greater than k, then it needs to shift to the left to have the q value reestablish itself equal to k.
01:29
Just the opposite happens if we have a reaction that has a positive delta n of 1, k here, is going to be equal to concentration of b, concentration of c over concentration of a.
01:58
And if we increase the volume, again, it wants to shift to the side with more moles of gas...