effect of temperature on gas pressure

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WFvolc
Posts: 7
Joined: Fri Aug 03, 2012 6:34 am
Occupation: student
Project Question: Something to do with pressure and gas
Project Due Date: 1st of September 2012
Project Status: I am just starting

effect of temperature on gas pressure

Post by WFvolc »

Hi again,

My second problem is this:

I have a sealed cylinder which I will heat up. I assume the cylinder is not expanding significantly with heat and not deforming with internal pressurization.

In the first case I will fill it with water prior to heating. As it is gas-tight, I would like to know what the calculated pressure increase will be. I would like to arrive at a curve from which I can point to the phase change to vapour and from which I can estimate the internal pressure at a given temperature above the boiling point.

In the second case I will fill it half full with water prior to heating. What will the result be then and how can I use the knowledge of the fraction of water in the vessel to estimate the differences in pressure accordingly??

As always, I am excited for your help!

Best regards and thanks.
deleted-93346
Former Expert
Posts: 294
Joined: Sun Dec 25, 2011 8:33 am
Occupation: Astronomer, Professor of Physics, SETI Researcher (retired)
Project Question: n/a
Project Due Date: n/a
Project Status: Not applicable

Re: effect of temperature on gas pressure

Post by deleted-93346 »

Once again, I am sorry to disappoint you. This second query is a rather more difficult problem. Perhaps the folks at this URL could help...

http://www.physicscentral.com/experimen ... estion.cfm

Good luck.

Also: DO NOT, EVER, TRY THIS EXPERIMENTALLY. AN EXPLOSION WILL RESULT!!
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