00:03
I think so here we have a few different signals and we want to find out or we have a few different structures.
00:12
We want to find out where we'll see them on nmr.
00:36
Okay, so our first one is just simple alkene or alkyne, sorry, alkanes.
00:43
And if we were to see, if we were to look and see how many signals we saw on the spectrum, this is a symmetrical molecule.
00:51
And each of these are ch2s that have two neighbors.
00:54
So we would only see one signal.
00:59
And then where on the spectrum would you find this peaks? probably in the one, zero to one range, because they're just alpains.
01:12
And then the integration for this one peak would be eight hydrogen, because all of the signals add up together.
01:22
And the splitting for this structure, well, if we look, each of these ch2s has four neighbor.
01:31
So it would be a pentate.
01:41
Okay, next we have the ketone, which is probably going to show up in the 3 -4 range.
02:02
And if we look at how many signals this might have, we have this one and this one that are symmetrical, the 2 ch2s.
02:13
So that i'll give us one signal.
02:15
And then this ch2 over here is a little different, so that one will give us a signal as well.
02:22
So we should see two signals.
02:31
For the ch2 at the end of the ring, this would probably be in the maybe 1 .5 range.
02:40
It's slightly shifted, but it's really not going to be that affected by that ketone because it's kind of far away at that point.
02:46
And the integrations for each of these peaks, we'll call this peak 1 and this peak 2.
02:55
Peak 1's integration would be for 4h, and peak 2's integration is 2h.
03:06
And then lastly the splitting for b, we would see for signal 1, it's two ch2s and they both have that ch2 as a neighbor.
03:20
So this would be a triplet.
03:24
And then the ch2 for signal 2 has four carbureghergons neighboring two on each side.
03:32
That one would be a pentate.
03:49
Okay, now we're looking at the alcohol.
03:51
This would be similar to the liquid...