00:01
Here we're given a graph that shows three different compounds, their vapor pressure as a function of temperature, and one of them looks like this.
00:17
That's hexane.
00:20
Another one looks like this.
00:26
That one is ethanol.
00:31
And then the last one looks like this.
00:36
And that one is isopropyl acetate.
00:41
The first question is, which liquid is the most volatile and which is the least volatile? well, the most volatile will be the one that has the highest vapor pressure at any given temperature.
00:55
So in all cases, you choose any temperature you want.
00:59
Hexane is going to be the most volatile.
01:10
And the one that's going to be the least volatile will be the one that has the lowest vapor pressure.
01:18
Isopropyl alcohol...no, isopropyl acetate.
01:24
I'll write it out.
01:27
Isopropyl acetate.
01:32
And for the second question, what is the normal boiling point of each of the liquids? the normal boiling point is the temperature at which the vapor pressure equals atmospheric pressure, atmospheric pressure being 716...