At ordinary temperature, why can `CO_(2)` but not `O_(2)` gas be liquefied by applying pressure? Give reason.

CO_(2) gas can be liquefied under pressure between

An unknown gas behaves ideally at 540 K in low pressure region, then calculate the temperature (in K) below which it can be liquefied by applying pressure.

A gas can be liquefied by pressure alone when its temperature

A gas can be liquefied by pressure alone when its temperature

What is critical temperature? Can a gas be liquefied at any temperature by increasing its pressure?

The temperature above which the gas cannot be liquefied by any amount of pressure is called…………………...

A gas can be liquefied at temperature T and pressure P if-