Question

The critical temperatures of NH3, He, O2, and N2 are 405.5K, 5.3K, 154.3K and 126K respectively. If the samples of these gases are cooled from 498K, which one will liquefy first

Answer 1

Given that,

The critical temperature of given gases

$NH_{3}=405.5\ K$

$He=5.3\ K$

$O_{2}=154.3\ K$

$N_{2}=126\ K$

We know that,

The liquefaction of the gas is very fast if the critical temperature of the gas is very high then that gas will be liquefy fastly.

We need to find which one will liquefy first

According to given data,

The critical temperature of NH₃ is very high so the sample of NH₃ will be  liquefy fastly.

Hence, NH₃ will be  liquefy fastly