Acids

Today in Class We...

1. Got Quiz 2.1 back
2. Went over acids and naming them
3. Reviewed naming Ionic and Covalent compounds
4. Took Quiz over naming Ionic and Covalent compounds

Acids

Acids are substances formed when nonmetal ions combine with hydrogen. The hydrogen is written first in the compound and the naming is based on whether the anion (negative ion) is:

• simple
• polyatomic.

When acids ionize they form H+ ions.

• Acids always contain hydrogen.
• Example: Hydrogen and Chlorine:

               -HCl or Hydrochloric acid

Naming Acids                            *Trick to remember Acids: 'ate'ic- 'ite'is

If an anion does not contain oxygen-            

• change the ending to "ic"                                                                                        
• add prefix hydro
• HF Hydrofluoric acid

If an anion does contain oxygen

• "ate" becomes "ic"                                
• "ite" becomes "ous"

Examples:  -H₃PO₄ - anion is phosphate = phosphoric acid
                    -HCN- hydrogen + cyanide = hydrocyanic acid
                    -H₂SO₃ - anion is sulfite = sulfurous acid

 Homework for tonight:

• Naming Workshop worksheet
• Study for naming quiz tomorrow *8 polyatomic ions need to be memorized

The next scribe will be Kevin L.