Question

How do you test for hydrogen chloride gas?

Answer 1

The test for hydrogen chloride gas is depicted as follows:

1. One of the best ways to detect Hydrogen Chloride($\mathrm{HCl}$) was by adding silver nitrate(${\mathrm{AgNO}}_3$) solution to form an insoluble precipitate. The formation of white precipitate shows the presence of chloride(${\mathrm{Cl}}^{-}$) ions and Hydrogen Chloride($\mathrm{HCl}$) gas.
2. The physical properties of Hydrogen Chloride gas ($\mathrm{HCl}\left(\mathrm{g}\right)$) at room temperature were mildly yellow, corrosive, non-flammable gas which is thicker than air. Upon contact with oxygen gas, Hydrogen Chloride($\mathrm{HCl}$) forms white corrosive vapours.