Answer to Question #169543 in Physical Chemistry for khushi

Question

Give the significance of critical point in the phase diagram of water.

Answer 1

Critical point is characterized by critical temperature, critical pressure and critical volume.

Critical temperature is the temperature above which a gas (steam) cannot be made to liquefy into liquid (water) easily.

Critical pressure is the pressure required to liquefy a gas at the critical temperature.

Critical volume is the volume occupied by one mole of a gas at critical temperature and pressure.

This critical point is a fundamental property of water.