00:01
For this problem, we're asked, what is the atmospheric pressure on top of mount everest on a day when water boils there at a temperature of 70 degrees celsius? so what i'm going to do is i'll walk you through the working with the equations and i'll leave the final, essentially the final statement of this to you.
00:20
You'll need to plug in the necessary values.
00:23
The reason why i do that is because the values that your teacher expects or are needed for the book.
00:30
May vary depending on when the book is from or the addition of the book, etc.
00:36
But we have that the boiling point or the boiling temperature at a particular pressure is given by one over the standard boiling temperature minus r the ideal gas constant times the logarithm of the vapor pressure of the liquid divided by p.
00:57
Which is the sort of reference temperature, usually one atmosphere, divided by the heat of vaporization of the liquid, and then that's all to the power of negative 1.
01:08
So, first of all, we have that, that means that 1 over tb would be equal to 1 over t knot, minus r times lawn, p over p .not, divided by delta h.
01:21
Vap.
01:24
So we want to figure out a way to isolate that p.
01:27
So first, we can rewrite this as r, lawn of p over p .0, divided by delta h vapor, which will be equal to 1 over t ,0, minus 1 over t b...