00:01
Okay, in this question, we are given two reactions and their equilibrium constants.
00:07
It asks us to use these reactions to predict an equilibrium constant for this reaction.
00:13
So let's see what the relationship is between these sets of reactions and this one down here.
00:18
Starting on top, nobr2 going to nobr.
00:23
This is in the correct order, or direction, i should say, nobr is in the products.
00:30
But we have one br down here and we only have half over here.
00:35
So the first thing we're going to do is multiply this reaction times 2.
00:44
Okay, so that gives us 1br and 2 nos.
00:47
In this reaction down here we have n2 and 02 one each but they're on the wrong side of the equation.
00:58
We need to flip this.
00:59
I'm just going to do these little arrows here.
01:01
It tells us we're going to flip the whole equation around.
01:06
And then we'll have 2 no in the products and that'll cancel out with the 2 nos over here.
01:11
That would leave us with n2o2 from this side, br from this side, and 2 nobrs on this side...