7.2 – NOTES Naming Acids

C. Naming acids ALL acids have H+ as a cation, name based on anion 1. Binary acids – acids composed of hydrogen and one other non- metal - prefix hydro- is followed by the name of the anion - the name of the anion must be changed by dropping the –ide and adding – ic Examples – HCl (hydrochloric), HF (hydrofluoric), H2Te (hydrotelluric)  

2. Oxyacids – acids composed of hydrogen, oxygen, and one other non- metal - do not have the prefix hydro – - the name of the anion determines the name of the acid -ate anion  drop the –ate and add –ic - per – one more hydrogen than the –ate anion example – chlorate ClO3-, perchlorate ClO4-; -ite anion  drop the –ite and add – ous - hypo- one less hydrogen than the –ite anion example – ClO2- chlorite, ClO- hypochlorite

D. Writing formulas from names covalents – Use prefixes to determine substcripts – do NOT criss Binary Acids – Criss Cross – H+ with monatomic anion Oxy acids – criss cross H+ with anion if name ends in –ic look for ate ion if name ends in –ous, look for ite ion