Question

Under what conditions can ideal gases be liquefied ? Give reasons to support your answer.

Answer 1

Ideal solution

The solution which obeys Raoult's law over the entire range of concentrations is known as the ideal solution.

$∆{\mathrm{H}}_{\mathrm{mix}}=0\mathrm{and}∆{\mathrm{V}}_{\mathrm{mix}}=0$.

Ideal gas

• A gas that strictly obeys the gas equation $\frac{P_1{V}_1}{T_1}=\frac{P_2{V}_2}{T_2}$ under all conditions of temperature and pressure is called an ideal gas.

Real gas

• The gas which does not obey the gas equation $\frac{P_1{V}_1}{T_1}=\frac{P_2{V}_2}{T_2}$ under all conditions of temperature and pressure is called real gas . All gases are real gases.
• A gas can be liquefied only at low temperature and high pressure.
• Liquification takes place only when the molecules come into contact and interact with each other.
• Real gases have volume therefore liquefication takes place before absolute temperature.
• But in Ideal gas, there is no force of attraction between the molecule and particles have zero volume.