Question

True or False.

Dry HCl gas and liquefied HCl turn blue litmus paper red.

Answer 1

This statement is false.

Explanation:

Dry HCl gas and liquefied HCl do not turn blue litmus paper red because HCl shows acidic properties only when it is dissolved in water and produces H⁺ ions.

\[\ce{HCl + H2O -> H3O+ + Cl-}\]

So, aqueous HCl turns blue litmus paper red.