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In thermodynamics, a critical point (or critical state) is the end point of a phase equilibrium curve. One 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.
Learn what is the critical temperature and pressure of water, and how they affect the properties of water and other substances. Find out how supercritical fluids are used in industry and examples of critical temperatures and pressures of common substances.
Learn what critical temperature is and how to calculate it from the graph of pressure and temperature. Find out the critical temperature and pressure of water and other substances, and their importance in thermodynamics.
This temperature is the critical temperature (Tc), the highest temperature at which a substance can exist as a liquid. Above the critical temperature, the molecules have too much kinetic energy for the intermolecular attractive forces to hold them together in a separate liquid phase.
The critical temperature \(\left( T_\text{C} \right)\) of a substance is the highest temperature at which the substance can possibly exist as a liquid. The critical pressure \(\left( P_\text{C} \right)\) is the pressure that must be applied to the gas at the critical temperature in order to turn it into a liquid.
Critical point, in physics, the set of conditions under which a liquid and its vapour become identical (see phase diagram). For each substance, the conditions defining the critical point are the critical temperature, the critical pressure, and the critical density.
2 Φεβ 2011 · Critical temperature may also be defined as the highest temperature at which the liquid phase of a substance can exist.
