# Is HCl an ionic salt or covalent molecule?

$H - C l$ is a polar covalent molecule to a first approximation........
And of course, we know that $H - C l$ is molecular because it is supplied in the lab as a gas; its boiling point is −85.05 ""^@C. Of course this gas has substantial water solubility, and when dissolved in water we get $\text{hydrochloric acid}$, in which the $H - C l$ bond has been ionized to form ${H}_{3} {O}^{+}$ and $C {l}^{-}$.