00:02
In this problem, we have water vapor given by figure five.
00:07
We have its phase diagram.
00:11
And we are asked to begin at a temperature of 85 degrees celsius and a pressure of 180 atmospheres.
00:18
So somewhere in the liquid phase, so 85, 180, you know, somewhere right here.
00:26
And we were asked if we gradually bring the pressure down to something as small as 0 .004 atmospheres, what would happen? so we're going to just make use of this figure, this phase diagram.
00:39
So for part a, if we're starting right here at 85 degrees celsius and 180 atmospheres, we're in the liquid phase.
00:45
If we gradually brought the pressure down to 0 .004, we'd end up perhaps somewhere right here.
00:53
So at some point, we would cross this boundary between the liquid and gas phase.
00:57
So this vapor would become a gas, would no longer be a liquid.
01:03
And that's essentially that.
01:05
For part b, we were asked to repeat, but we start at zero degrees celsius, which appears to be right here, and 180, once again...