00:01
All right, so we have three substances here, and we want to pick, in each case, the alcohol that would best solvade them.
00:07
So we're using the rule that like dissolves like in terms of intermolecular forces.
00:13
So polar compounds will solvate polar compounds, non -polar will solveate non -polar.
00:18
And if we have a hydrocarbon chain with an oh group, which is the structure of an alcohol, the longer the hydrocarbon chain, the more non -polar.
00:29
And the shorter it is, the more polar because this oh group is what's making it polar.
00:34
So a longer non -polar chain will dominate over that.
00:41
And if you have a short chain, then it's going to be polar because the oh group will prevail.
00:50
So for part a, the substance we're trying to dissolve is i2, iodine.
00:55
And when you have a molecule made of only one element, in this case a diatomic, there's no difference of pull of electrons by one versus the other...