The phenol-water system has a upper critical solution temperature.

What is meant by 'Critical temperature?

Define critical temperature. Write the value of critical temperatue for CO_(2) .

Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases. {:("Gases",H_(2),He,O_(2), N_(2)),("Critical temperature in Kelvin",33.2,5.3,154.3,126):} From the above data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first.

Critical temperatures of H_(2) O. NH_(3) . CO_(2) and O_(2 are 647K , 405K, 304.10 and 154.2 K respecitvely. If the cooling starts from 500K to their critical temperature, the gas that liquifies first is :

Which of the following properties of a system undergoing change at a constant temperature and pressure is a measure of the maximum useful work that the system can do ?

Sodium chloride solution freezes at lower temperature then water but boils at higher temperature than water. Explain.