00:18
Now we do the problems by question, answer question by question.
00:24
Question a, how many steps are involved in this reaction? this diagram tells us there are two steps in this reaction because we see two high pick here, pitch one and bit two.
00:38
Let's see.
00:39
Do questions you see.
00:41
Label each transition test.
00:44
We have two steps, so we have two transition states.
00:47
Transition state 1 and transition state 2.
00:54
And now question d.
00:56
Which point on the graph corresponds to a reactive intermediate? we know the reactive intermediate should be located at the point where two transition states are separated, so it should be right here.
01:11
So this is a reactor intermediate point.
01:23
Question b, we said e, c, c and now we do b.
01:32
Label delta h and activation energy for each step and label delta h overall.
01:40
The activation energy of the step one should be from the measurement of energy from the reactant to the high pit of the transition step 1.
01:54
For the step 2 is the measurement from the interacting, the reactant, the reactant, the reactant, mediate to the pit of the transition step 2, from here to here.
02:08
So we have two transit activation energy, activation energy 1, and activation energy 2.
02:21
To label delta h well, we draw some important lines, and these lines are parallel together.
02:30
The first line it should be from the reactant.
02:34
The second line from the product.
02:42
And the third line from the intermediate.
02:59
The measurement of energy from the reactant to the intermediate reactive is delta h1.
03:12
And the measurement energy from the product to the intermediate reactive should be delta h2...