Polyatomic ions:
Ammonium NH4
+
Nitrate NO3
-
Nitrite NO2
Sulfate SO4
2-
Hydroxide OH-
Phosphate PO4
3-
Carbonate CO3
Cyanide CN-
Common Acids:
HCl hydrochloric
acid
HNO3 nitric acid
H2SO4 sulfuric acid
H3PO4 phosphoric
CH3COOH acetic acid