00:01
In this question we're going to be applying a part of rout's law, rout's law.
00:07
And according to rout, partial pressure of the solution, the vapor pressure of solution is equal to the mole fraction of the solvent, multiplied by the vapor pressure of the solvent.
00:21
That is, the vapor pressure of the solution, that is, vapor pressure above the solution, is directly proportional to the more fraction of the solvent.
00:29
So since we've been told that this is 151, so the main task is to determine the mole fraction of our hexane.
00:39
So the first assumption that we are going to have to make is our solution is 100 grams.
00:45
And if we are to look at the mass of naftalin, the mass of, we're going to call this n, mass of naftalin.
00:53
This is equal to the percentage naftalin divided by the solution, the entire solution.
00:59
So the mass of naftalin is going to be equal to 0 .1235 multiplied by the mass of solution which is a hundred.
01:10
So the mass of naftalin, this is going to be equal to 1 .2 .35 grams.
01:17
Now looking at hexane, the mass of xane is going to be, since this is a mixture of xxene in naftalin, is going to be a hundred minus one two point...