It is prepared in the laboratory by the action of Conc. H2SO4 on chlorides.
H2SO4(aq)) + NaCL(aq) → Na2SO4(aq)) + HCL(g)
Then the hydrogen chloride gas can be dissolved in water to form hydrogen chloride acid.
NB: Due to the high solubility of hydrogen chloride, it is used in fountain experiments.
Ammonia and sulphur (iv) oxide can as well be used in the fountain experiment.
Was this helpful?