Question

The conditions which are best suitable for the liquefaction of gases are?

• A. Low temperature, low pressure
• B. Low temperature, high pressure
• C. High temperature, low pressure
• D. High temperature, high pressure

Answer 1

The correct option is B Low temperature, high pressure

Answer : B. Low temperature, high pressure

Explanation :

At high pressure the gas will get compressed and the gas molecules will come closer in this compressed state.

At low temperature, the gas get cooled. Since temperature decreases, the kinetic energy of gas molecules decreases.

In liquid state, molecules are closer than in gaseous state. Also, molecules have low kinetic energy in liquid state that in gaseous state.

Since the combination of high pressure and low temperature make the gas molecules to come closer and to have a low kinetic energy, it leads the gas to become liquid. So, option B is the best suitable condition for liquefaction of gases.