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Topic: Phase of the pentane?  (Read 2199 times)

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Offline marti77

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Phase of the pentane?
« on: September 02, 2010, 08:15:10 AM »
I need to know if the pentane at the temperature of 423 K and a pressure of 4 bar is in the fluid phase or in the liquid phase. I know that the vapour pressure of the pentane is 5,73 bar at 293 K. How can I do?
Thanks..
Martina
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Offline MrTeo

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Re: Phase of the pentane?
« Reply #1 on: September 02, 2010, 02:32:05 PM »
Phase changes happen when the vapor pressure (in this case that of the liquid pentane) is equal to the external pressure.
You know that pentane is liquid at 293 K and atmospheric pressure... (pvap<patm) how does vapor pressure change when temperature increases?
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