00:01
So if we're given a kp and we're given a chemical reaction where we know the states of matter and we know the temperature, we can convert that equilibrium constant to kc.
00:13
And so the equation we need to use is kp is equal to kc times rt to the delta n power.
00:25
Kp is the pressure equilibrium constant.
00:28
Kc is the concentration or mold.
00:30
Polarity equilibrium constant.
00:33
R is the gas constant.
00:35
T's the temperature in kelvin, and delta n is the change in number of moles of gas.
00:42
Now we're going to try to calculate kc.
00:45
So we're going to have to divide both sides by rt to the delta n to get kc by itself.
00:55
Because then we wind up with kc is equal to kp times rt.
01:01
To the delta n power.
01:06
So we know kp.
01:08
We're told that the temperature for each of the problems is 298 kelvin, so we have t.
01:13
R is a constant, and we can calculate delta n.
01:18
All right.
01:18
So in this case, delta n, we have two moles of gas at the end.
01:24
We have one mole of gas at the beginning.
01:27
Delta n is one...