00:03
Hi there.
00:04
In this question, we have two pairs of compounds, and we want to know if they are the same compound or structural isomers.
00:12
So let's talk for a moment about what structural isomers are.
00:20
Structural isomers are two structures that have the same formula, the same chemical formula, but a different structure.
00:48
And since they have a different structure, they will have different properties, both chemical and physical properties.
00:59
All right, and the same compound, of course, will have the same formula and the same structure.
01:27
So as we look at the first pair, the first thing i want to do is determine the formulas.
01:33
So the first one, the one that is just written out in its condensed form, has four carbons.
01:40
So it is c4, and then it has 3, 4, 6, 7, 8, 9, 10 hydrogen.
01:47
So it's c4h10.
01:51
The one that is written out with the little, a little bit more structurally, because it shows the bond there, it actually has five carbons and two, four, six, eight, 11 hydrogen.
02:12
All right.
02:13
So these two are neither a structuralizer nor the same compound because they have different formulas.
02:22
The second one's even a little bit odd because that one carbon only has a total of three bonds.
02:41
So that is not a complete formula even.
02:46
But they are not the same compound...