Question

the critical point of pure substance is​

Answer 1

Answer:

Critical point, in physics, the set of conditions under which a liquid and its vapour become identical (see phase diagram). For eachsubstance, the conditions defining the critical point are the critical temperature, the criticalpressure, and the critical density.

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Answer 2

Answer:

A critical point is the end point of a phase equilibrium curve. The most prominent example is the liquid-vapor critical point, the end point of the pressure-temperature curve that designates conditions under which a liquid and its vapor can coexist. At higher temperatures, the gas cannot be liquefied by pressure alone. At the critical point.