States of Matter | Liquefaction Or Liquification Of Gases | Part 2 | Lecture 19 |

Physical Chemistry (Grade 11) :High School Learning
States of Matter | Liquefaction Or Liquification Of Gases | Part 2 | Lecture 19

~Process Of Liquefaction Of Gases Continued [Pressure Versus Volume Gas Graph explanation]

~Definition
~Technical Terms :
-Critical Point
*a point where gas and liquid cannot be differentiated
*point E in the graph
*a characteristics of a given real gas
-Critical Temperature
*value of temperature at critical point
*maximum temperature at which liquefaction of a gas can take place /minimum temperature at which a gas cannot be liquefied
*helps to reach at the critical point
*represented by Tc

-Critical Pressure
*value of pressure at critical point
*minimum pressure needed at critical temperature liquefy the gas
*pressure value below this results in no liquefaction
*represented by Pc

-Critical Volume
*the volume of gas (one mole) occupied at Tc and Pc
*represented by Vc
*has a unique value hence is difficult to be calculated individually

-Analysis of the process of Liquefaction/Liquification [explained with the help of the most probably asked question]
*Is it possible to convert a gaseous substance into a liquid substance without going through the dome shaped structure?
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