00:01
The system we have at equilibrium is 1 -mole -co reacting with 1 -mole -cl2 to produce 1 -mole -co -cl2.
00:08
K -c will be equal to the concentration of co -cl2, divided by the concentrations of co and cl2.
00:16
This numerical value is 77 .5 at equilibrium.
00:22
Delta h, standard, is negative 108 kilojoules.
00:26
So it's an exothermic process.
00:28
Exothermic processes shift to the right at lower temperatures.
00:33
The question, however, for this system is if the volume of the equilibrium system is suddenly decreased at constant temperature, what happens? well, if the volume decreases, we have less room for gas.
00:50
Because we have less room for gas, it needs to shift to the side with fewer moles of gas, which is to the right.
00:56
It shifts to the right because qc ends up being less than kc when the volume is decreased...