Question

why are the gases Helium and hydrogen not liquefied at room temperature by applying very high pressure

Answer 1

Liquefied gases, such as liquid nitrogen and liquid helium, are used in many cryogenic applications. Liquid helium is used and allows for the lowest attainable temperatures to be reached

Answer 2

As the critical temperature of gases such as Helium and hydrogen are lesser than the room temperature, they cannot be liquefied at room temperature by applying very high pressure.

Explanation:

• The temperature at which the gas can be converted from gaseous state to liquid state is called critical temperature.
• The gases whose critical temperature are above the room temperature can be liquifed at room temperature.
• The critical temperature of given gases are as follows:

1. Helium: -267.96°C
2. Hydrogen: -239.95°C

• The standard value for room temperature ranges from 20°C to 25°C approximately.
• When the critical temperature of helium and hydrogen is compared with room temperature, it is evident that room temperature is high.
• Thus it is inferred that as the critical temperature of helium and hydrogen is lower than room temperature, they cannot be liquefied at room temperature by applying very high pressure.

Learn more about such concept

Write short note on liquefaction gases

https://brainly.in/question/3246417

What is the correct order of liquefaction of gases?

https://brainly.in/question/3382969