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.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-