Give the name of hcl as an acid and as a binary compound. spelling counts!

As an acid is Hydrochloric Acid. As a binary compound is Hydrogen Chloride.

Explanation: A binary acid is an acid that is formed of hydrogen and one other element, most commonly a halogen. To name it, begins with the prefix hydro- and then add the base name of the anion plus the suffix -ic and acid. For HCl, the anion is Cl⁻, so the name is HydroChloric Acid.

To name a binary compound:

For HCl, the cation is H⁺ and from the periodic table is Hydrogen. Cl⁻ is chlor-, therefore as a binary compound the name is Hydrogen Chloride.