1. Naming Acids

2. Naming Acids
Acids are ionic (meaning they have a charge!) compounds that always start with a hydrogen ion. (H+)
Always start by identifying if the acid contains oxygen.

3. Naming Acids with NO Oxygen
The cation is always H+ so the name will always start with Hydro-
The anion is the root of the element with the ending –ic
Always have to include “Acid” at the end.

4. Examples HF
HBr

5. Naming Acids that HAVE Oxygen (Means it’s polyatomic)
The cation is always H+, so we don’t have to name it.
The anion is the root of the polyatomic + an ending
If the polyatomic ends in –ate, change it to –ic
Sulfate = Sulfic
If the polyatomic ends in –ite, change it to –ous
Always have to include “Acid” at the end.

6. Examples
HNO3
H2SO4

7. Practice
H2CO3 HI
H3PO4
HCl

8. Writing the Formula for an Acid

9. Every formula will start with an H! Look for the prefix Hydro-
If it contains Hydro-there is no oxygen! No oxygen=no polyatomics!
Start by writing down H and its charge
Write the anion with its charge
Balance charges, write the formula and reduce when necessary
Example: Hydrochloric Acid

10. Write down the H and its charge
No prefix hydro?
Change the ending back
-ic = -ate
-ous = -ite
Write down the H and its charge
Find the formula and the charge of the polyatomic
Balance charges, write the formula and reduce when necessary.

11. Examples
Sulfurous Acid
Phosphoric Acid
Chlorous Acid
Carbonic Acid