00:01
In this video, we want to calculate an equilibrium constant for a given reaction.
00:05
So we know the balanced equation.
00:07
We have br2 is reacting with i2, equilibrium, so double arrow, and we form 2 ibr, and it's balanced.
00:15
And we place 0 .6 moles of bromine and 1 .6 moles of iodine together in a 1 -liter container, so we can just assume that the moles is equal to the molarity, because we're dividing by 1.
00:27
So 0 .6 molar, and then we have 1.
00:31
Six molar.
00:34
And we assume that we have no ibr to start.
00:38
So that's our initial.
00:40
And we can draw our table, the change and then the equilibrium value.
00:44
We're told that at equilibrium, we have 1 .19 molar, iodine monobromide.
00:50
So this is 1 .19 molar.
00:54
And then we can compute the amount of br2 and i2 that reacted because, so we know for every one mole of each of these that reacts, two moles of this are so this is like if these go down by x and they have to go down because there's no ivr to start.
01:10
So the equation is going to though, right? so this is going down by x, this is going down by x.
01:14
This is going down by x...