Critical Temperature and Pressure

Critical Temperature and Pressure - The highest temperature...

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Critical Temperature and Pressure Gases can be liquified by either decreasing the temperature or increasing the pressure As long as the temperature is not too high, we can use pressure to liquefy a gas As temperatures increase it becomes more difficult to use pressure to liquefy a gas (due to the increasing kinetic energy) For every substance there is a temperature above which it is impossible to liquefy the gas regardless of the increase in pressure
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Unformatted text preview: The highest temperature at which a substance can exist as a liquid is called its critical temperature The critical pressure is the pressure required to bring about condensation at the critical temperature For example, oxygen has a critical temperature of 154.4 K. It cannot be liquefied until the temperature is reduced to this point. At this temperature, the pressure needed to liquefy oxygen is 49.7 atm....
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This note was uploaded on 11/22/2011 for the course CHEMISTRY CHM1025 taught by Professor Laurachoudry during the Fall '10 term at Broward College.

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