Question

$N{H}_3$ is more liquefiable when compared to HCl. Why?

• A. Lower molecular mass
• B. H - bonding
• C. Presence of H
• D. Presence of Cl

Answer 1

The correct option is B

H - bonding

When we try to liquefy a gas, it is necessary to reduce temperature and increase pressure.

When this is done to $N{H}_3$, this process becomes easier as H-bonds also help in pulling together the molecules.

This will not happen in $HCl$ because of the bigger size of $Cl$.