Acids that do NOT contain oxygen: 

hydro______ic acid

The acid name comes from the root name of the anion name. The prefix hydro- and the suffix -ic are then added to the root name of the anion. 

Acid that DO contain oxygen (oxyacids):

 ______ic acid      or        _______ous acid      or       hypo ______ous acid

⚠️ You need to know your polyatomic ions well. See list here for reference.

Suffixes are used based on the ending of the original name of the oxyanion. If the name of the polyatomic anion ends with: -ate, change it to -ic for the acid

-ite, change it to -ous in the acid  … if contains 1 fewer oxygen than “-ate” ion

-ite, change to hypo___ous acid … if contains 2 fewer oxygen than “-ate” ion

HNO3, which contains the polyatomic ion nitrate, is called nitric acid. HNO2, which contains the polyatomic ion nitrite, is called nitrous acid.