1. POLYATOMIC IONS
FROM NOW ON:
know NO CO SO PO ions
(–ates and –ites)
know NH4+
know –ides: cyanide, hydroxide
know chlorine-containing ions

2. ACIDS
compounds which produce hydrogen ions (H+) when dissolved in water
common acids:
HCl ■ HC2H3O2
H2SO4 ■ H3PO4
HNO3 ■ H2CO3

3. ACIDS
contain an anion (monatomic or polyatomic) with enough H+ cations to produce a neutral compound
Cl– needs one H+ = HCl
SO42 – needs 2 H+ = H2SO4
NO3– needs one H+ = HNO3

4. ACIDS acids all have hydrogen as the first element in their formulas
the word acid at the end of
the name

5. NAMING BINARY ACIDS HCl start with prefix hydro– change –ide to –ic
add word acid at the end
hydrochloric acid

6. NAMING BINARY ACIDS HBr hydrogen bromide hydro– –ide becomes –ic acid
hydrobromic acid HI
hydroiodic acid

7. NAMING POLYATOMIC ACIDS
HC2H3O2
start with polyatomic name
(no prefix hydro–)
change –ate to –ic or –ite to –ous
add word acid at the end
acetic acid

8. NAMING POLYATOMIC ACIDS
HClO2
chlorite
–ite becomes –ous acid
chlorous acid
H3PO4 HNO3 H2SO4
phosphoric nitric sulfuric
acid acid acid