Is HCl a base or an acid?

Answer 1

HCl, or hydrochloric acid, as the name implies, is an acid. In fact, it is considered a strong acid because it dissociates completely in water to form H3O+ and Cl-. A 1.00M aqueous solution of HCl has a pH of 0. Concentrated HCl (about 12M) has a pH of -1.1. pH = -log10[H+]

But it can also act as a base in reactions with acids stronger tha itself like HClO4. In its anhydrous form, HCl is a very poisonous gas.
It is an Acid, known as Hydrogen chloride (and Hydrochloric acid, when it is dissolved in water)

Answer 2

HCl is short for hydrochloric acid so it is therefore an acid.

Answer 3

HCl is an acid. It is a strong acid that dissociates completely in water to produce hydronium ions (H3O+) and chloride ions (Cl-).

Answer 4

Hydrochloric Acid is acidic.