Question

what is meaning of critical pressure and temperature

Answer 1

Critical temp and pressure are important terms as far as liquefaction of gases is concerned. We need liquid Nitrogen and Helium for low temp experiments.

compressing gases with high pressure liquefy gases at particular temperature.

Critical temp: The temp at or above which we cannot liquefy gas/vapor into liquid no matter how much pressure you apply.

Critical pressure: Pressure required to liquefy gas at critical temp.

But wait a second, we said before gases cannot be liquefy at or above critical temp. So what will happen now ? It will go to its supercritical fluid state which is called super critical fluid state. Super critical fluid is the state in which gas and liquid states are not distinct/clear. You can say that its a critical/complex kind of state (No it is not gas, it is liquid, no it is not liquid it is gas; actually it is super critical fluid).


hope this will help u

Answer 2

Answer:

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