00:01
Good day, the topic is about colligative properties.
00:04
When solute is added to solvent, the solution that is formed has properties that differ from the pure solvent.
00:10
In particular, the solution boils at a higher temperature than the pure solvent.
00:14
In this problem, we're given with different solutions with different solute, which concentration are at 10 % by mass.
00:23
We wish to arrange the following solutions in increasing boiling point.
00:27
So the idea is the more solute particles that are dissolved in the solution, the greater the increase in the boiling point, and thus the greater what the boiling point of the solution is.
00:42
Now, the amount of particles can be deduced from first noting what type of solute there is.
00:49
That means if the solute is molecular or ionic.
00:52
And then the second one is, of course, taking note of the concentration of the solution.
00:58
So let us convert the concentration of the solution from mass percent into molality.
01:06
So to do that, let us assume first 100 grams of the solution.
01:15
So since the solution has is 10 % by solute, it follows that the grams of the solute will be equal to 10 % of 100.
01:25
So that's 10 grams...