Each of the following substances is a gas at 25^$\circ$C and 1 atmosphere pressure. Which one will liquefy most easily when compressed at a constant temperature A) F₂ B) H₂ C) HF D) SiH₄ E) Ar

Question

Quizplus · Accepted Answer

The ease with which a gas becomes liquid upon compression depends on its critical temperature and pressure. A gas that has a critical temperature below the ambient temperature and a moderate critical pressure will liquefy most easily. Among the given options, HF has the lowest critical temperature (-83.8°C) and a moderate critical pressure (12.7 atm), which makes it the most easily liquefiable gas. The other gases have higher critical temperatures or much lower critical pressures, which means they require much higher pressures or lower temperatures to liquefy.

Each of the Following Substances Is a Gas at 25 ∘\circ∘

Each of the Following Substances Is a Gas at 25^$\circ$