Which gas among the following is the easiest to liquify?
Which gas among the following is the easiest to liquify?
$\mathrm{SO}_2$
$\mathrm{N}_2$
$\mathrm{NH}_3$
$\mathrm{CO}_2$
Solution
$\mathrm{SO}_2$ is a polar molecule with strong intermolecular forces of attraction and high value of van der Waals' constant '$a$'
Also $\mathrm{SO}_2$ is a temporary gas that has high critical temperature. So, it can be liquified easily.