What happens to pressure when a liquid turns into a gas in a confined chamber? I'm doing an experiment requiring immense pressures. Since I do not have access to a pump that can create these pressures I settled on something different...
Instead of using a pump I want to utilize the expansion ratio from liquid to gas of a particular element; liquid Neon. Neon has the highest expansion ratio of all known substances, by a factor of 1:1445!
I was wondering, if I put liquid Neon in a container with a given volume, seal it, and then heat it above Neon's boiling point (not very hard as Neon's boiling point is 27.104 K) what would happen to the pressure once the Neon has expanded by a factor of 1:1445? How much liquid Neon would I need to achieve a certain pressure with a container of a given volume? Would the increased pressures have any effect on the boiling point of the Neon?
I'm assuming the ideal gas laws apply, but if they don't let me know!
 A: The gas would not expand 1445 times unless you use a small amount in a large vessel.  If it is a sealed vessel, the pressure would increase until it reached max pressure of the vessel or it reached equilibrium.
I work with anhydrous ammonia on a regular basis.  I will talk about the pressure and temperature of ammonia as it is what I am most familiar with.  
One of the worst things you can do is trap liquid ammonia in a pipe.
-28F it would be at 0 psi
0F - 16 psi
32F - 48 psi
60F - 93 psi
100F - 200 psi
With ammonia, you only fill a tank part of the way to allow the gas to flash and stabilize.  
To do your experiment, you are going to need safety relief valves, a lot of specialized equipment.   What you are proposing is very dangerous.
Your vessel has to be rated for 40% more pressure than you expect to achieve. Unless you are using very small amounts, this is not something you can piece together yourself.  You are going to need a way to fill the vessel, and then remove the liquid when you are done.   You are going to need a way to add the neon without heating it up too much.  


A: Boiling point is a function of pressure. 
As the pressure goes up, so does the boiling point (for most materials)
You should find a phase diagram for neon, and look at the line between gas and liquid. That will tell you what temperature you need to reach your desired pressure. 
