00:01
In this problem, we're looking at proton and a mars for acetic acid.
00:10
It looks like this.
00:13
And it's a purple acetate, which looks like this.
00:21
And here i'm trying to write in all of our hydrogens so that we don't forget any.
00:27
And we want to mash the structure to the spectrum.
00:30
So let's think first.
00:32
If we think about acetic acid, we have three hydrogens here with no neighboring hydrogen.
00:39
So this would show up as a singlet.
00:42
When we're next to a carbonyl, this shows up between two and three parts per million.
00:51
And then this hydrogen would show up as a singlet.
00:56
And it might show up around 11 parts per million.
01:02
And so we can tell already that this is going to match our bottom spectrum, where this hydrogen is the one far down by 11.
01:13
That's a singlet...