00:02
Hi there.
00:03
This question addresses why the addition of a solute to a pure solvent changes the vapor pressure of that pure solvent.
00:14
All right.
00:14
So let's go ahead and work through this paragraph and fill in the blanks here.
00:19
So the vapor pressure of the solution is going to be lower than the vapor pressure of the pure solvent because the nature's tendency, because of nature's tendency towards greater entropy.
00:37
Okay, so you add a solute to the solvent, and it lowers the vapor pressure of that solvent because it is leading towards greater entropy, which is what nature prefers.
00:52
All right.
00:52
So the entropy of the solutions, we're working with the next sentence now, the entropy of the solution is greater than that of the pure solvent.
01:13
Because remember entropy means disorder or randomness.
01:22
Let's use randomness.
01:23
I like that better.
01:27
All right.
01:28
So adding a solute to that pure solvent increases the randomness.
01:31
It increases the entropy.
01:35
So the entropy of the solution is greater than that of the pure solvent...