00:02
In this problem, we have to identify the molecule which will have least vapor pressure.
00:09
So which compound will have least vapor pressure? so the molecule which will participate in hydrogen bonding will have the least vapor pressure.
00:17
So the molecule which will participate in hydrogen bonding will have least vapor pressure.
00:47
Now the question is how to identify the molecule? which will participate in hydrogen bonding.
00:54
So for that we have to check for the acidic hydrogen.
01:01
What is acidic hydrogen? the hydrogen which is attached with either oxygen, fluorine or nitrogen that particular hydrogen is called acidic hydrogen.
01:16
Now how we will identify that? so we will draw molecular structure for each of the three.
01:22
So first is cs3 o cs3 so its molecular structure will be c o c and these carbons will attach with three hydrogen atoms.
01:37
Now what will be the molecular structure for cs3, cs2 oh? so this will be this will be the structure of cs3, cs2 oh.
01:54
Now if you look at the third one, so its structure will be all right.
02:07
So these are the structures of the given now we will look for the acidic hydrogen.
02:14
So what is the acidic hydrogen? the hydrogen attached with oxygen, fluorine or nitrogen atom.
02:19
So here oxygen atom is present but there is no hydrogen is attached to this oxygen and all the hydrogen atoms are attached to carbon atoms.
02:29
It means that in first molecule there is no acidic hydrogen...