Q.What is critical temperature and critical pressure? OR Which one is heavier between wet air and dry air, and why?
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Start your 14-day free trial to unlock the full solution →Critical temperature is the highest temperature at which a gas can still be liquefied by pressure alone; critical pressure is the pressure needed to liquefy it at that exact temperature.
For every real gas there exists a critical temperature, Tc, above which the gas cannot be converted into a liquid however great the pressure applied — above Tc, the distinction between the liquid and gaseous states disappears (the substance becomes a supercritical fluid). At the critical temperature itself, the minimum pressure that must be applied to liquefy the gas is called the critical pressure, Pc. Together with the critical volume Vc, these define the 'critical point' of a substance on its phase diagram, e.g. …
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