Final answer:
The correct pairing of an acid name to its formula involves understanding the naming conventions based on anion suffixes: '-ide,' '-ate,' and '-ite.'
Step-by-step explanation:
The question asks for the correct match of an acid name to its formula. When naming an acid, the anion that combines with hydrogen determines the acid's name. For an anion ending in '-ide,' the acid name starts with 'hydro-' and ends with '-ic acid.' For a polyatomic ion ending in '-ate,' the acid name ends in '-ic acid,' and for one ending in '-ite,' the acid name ends in '-ous acid.' Hence, an acid derived from sulfate (SO42-) would be named sulfuric acid (H2SO4), and an acid derived from nitrite (NO2-) would be named nitrous acid (HNO2).
For the compound H2CO3, the correct name would not be 'hydrogen carbonate acid' but carbonic acid, following the naming rule for anions ending in '-ate'.