Choose the names for acids below. You might need a table of polyatomic ions.

Select one choice per compound and submit your answer.

H2SO3

The name of an acid is based on the name of a polyatomic ion in the formula.

Polyatomic ions that end with -ite form acids that end with -ous acid. For example, nitrite (NO2-) corresponds to nitrous acid (HNO2). Sulfite (SO32-) corresponds to sulfurous acid (H2SO3). Hypochlorite (ClO-) corresponds to hypochlorous acid (HClO).

Polyatomic ions that end with -ate form acids that end with -ic acid. For example, nitrate (NO3-) corresponds to nitric acid (HNO3). Sulfate (SO42-) corresponds to sulfuric acid (H2SO4). Perchlorate (ClO4-) corresponds to perchloric acid (HClO4).

If it is a binary acid, HCl, HBr, HI, H2S etc, the name will include hydro- ... -ic acid. For example, hydrochloric acid, hydrobromic acid, hydroiodic acid, and hydrosulfuric acid respectively.

Do I need to memorize the polyatomic ions names? If the table of polyatomic ions is not provided during quizzes and midterms, then, yes, you do need to memorize the polyatomic ions names.