Critical temperature of some substance are given below:
It is not possible to liquify `CO_2` gas above 31.1^@C by applying pressure. Why ?

Critical temperature of some substance are given below: Which of the above gas can be easily liquified?

CO_2 cannot be liquified above 31.1°C. Why?

The isotherm of carbon dioxide at various temperatures is given below: Identify the pressure at which liquid CO2 appears for the first time when temperature is 30.98°C. What is this pressure called?

Why are the gases helium and hydrogen not liquified at room temperature by applying very high pressure?

Explain the significance of critical temperature and critical pressure for CO_2 which is kept at 31.10^@C . A minimum pressure of 72.9 atm should be applied to liquify it.

Some features of a reversible reaction are given below: There is no effect, when the pressure is increased. Explain the reason for above inferences.

Certain properties of liquids are given below: Classify them on the basis of effect of temperature on them. a) Evaporation b) Vapour pressure c) Surface tension d) Viscosity