When hydrogen (H2) and chlorine (Cl2) gases are mixed, hydrogen chloride (HCl) is produced. Hydrogen chloride is classified as what type of matter?

Gaseous matter

Explanation:

Hydrogen chloride gas is formed from the combination of volumes of hydrogen gas and chlorine gas in equal proportion. It is one of the hydrogen halides I. e a compound formed from the combination of hydrogen and halogens.

Hydrogen chloride gas is a colorless gas.

Both hydrogen gas and chlorine gas can be obtained through the electrolysis of brine in the chlor alkali process.

Cl2 (g) + H2 (g) → 2 HCl (g)

The combination is exothermic and thus heat is released to the surroundings. A construction called HCl burner is used to carry out the reaction because of the heat given off. The produced gas is then absorbed in water