00:02
In this problem, first we have one ir spectrum and these three options, and we need to choose which corresponds with it.
00:10
So real quick, if we look at what would show up for the ir for each of these, here our carbonyl would be our main thing to look for at 1700.
00:21
Here we just have sp3 carbon hydrogen bonding around 2950.
00:29
And here we'd primarily be looking for our oh and our co stretches at 3 ,300 and 1 ,200 respectively.
00:42
So if we look at our spectrum, we do have stuff above 3 ,000, so we can eliminate these two.
00:51
And this is what we want.
00:53
So we have this nice broad peak at 3 ,300.
00:57
And we do have around 1 ,200 another peak.
01:03
Then we have another spectrum with new structures.
01:09
So here we have a carboxylic acid.
01:13
So our oh stretch would be 2 ,500 to 3 ,500, and our carbonyl would show up around 1 ,700.
01:22
Here we have our oh and our co stretches...