Which rule should be followed when naming binary acids? use a prefix for the number of hydrogens. start the name with hydro-. change -ate to -ic. change -ous to -ite.

Answer is: Start the name with hydro-.

Binary acids are chemical compounds in which hydrogen is combined with a second nonmetallic element.

The names of binary acids begin with hydro- followed by the name of the other element modified to end with -ic.

For examples:

HCl is hydrochloric acid.

HBr is hydrobromic acid.

H₂S is hydrosulfuric acid

i think the answer is terrae but not 100 percent sure. ▓▬▬ §