Unit 6: Nomenclature - Part IV Mrs. Callender Acids and Bases Unit 6: Nomenclature - Part IV Mrs. Callender

How do I name acids and bases? Lesson Essential Questions: How do I name acids and bases? How do I write a formulas for acids and bases?

Writing Common Names for Binary Acids. Ex. HCl Hydro chlor ic Acid 1. It is an acid because it starts with hydrogen. 2. Since it is a binary acid it starts with the prefix hydro-. 3. Part of the anion name comes next. 4. Followed by the suffix –ic. 5. The word Acid is added to the end.

Writing Common Names for Binary Acids. Ex. HI Hydro iod ic Acid 1. It is an acid because it starts with hydrogen. 2. Since it is a binary acid it starts with the prefix hydro-. 3. Part of the anion name comes next. 4. Followed by the suffix –ic. 5. The word Acid is added to the end.

Writing Common Names for Polyprotic Acids. Ex. H3 PO4 Phosphor ic Acid 1. It is an acid because it starts with hydrogen. 2. It is a polyprotic acid because it contains a polyatomic ion. 3. Anion name is written first minus the suffix (-ate). 4. If it contains an –ate polyatomic ion then the anion gets the suffix –ic. 5. The word Acid is added to the end.

Writing Common Names for Polyprotic Acids. Ex. H2 SO3 Sulfur ous Acid 1. It is an acid because it starts with hydrogen. 2. It is a polyprotic acid because it contains a polyatomic ion. 3. Anion name is written first minus the suffix (-ite). 4. If it contains an –ite polyatomic ion then the anion gets the suffix –ous. 5. The word Acid is added to the end.

Little Help Remembering… If we –ate something –icky it m-ite kill –ous. Remember… this is only for polyprotic acids. Binary Acids get a hydro- prefix with an –ic suffix.

H+1 I-1 HI Writing Acid Formulas. Ex. Hydroiodic Acid It is an acid so it’s going to start with hydrogen. 2. Write the anion with it’s charge and balance. +1-1= Net charge of zero which means it is balanced. H+1 I-1 HI

Writing Polyprotic Acid Formulas Ex. Perchloric Acid Starts with hydrogen because it’s an acid. 2. Write the anion with it’s charge. -ic acid means it came from an –ate polyatomic ion. +1-1= Net charge of 0 which means it is balanced. H+1 ClO4-1 HClO4 Balanced

Writing Polyprotic Acid Formulas Ex. Phosphorous Acid Starts with hydrogen because it’s an acid. 2. Write the anion with it’s charge. -ous acid means it came from an –ite polyatomic ion. +1-3= Net charge of -2 which means it is NOT balanced. H+1 PO3-3 H3PO3 Not Balanced

Na+1 OH-1 NaOH Bases Bases contain –OH ions Ex. sodium hydroxide Write the symbol of the cation with its charge. 2. Write the anion with it’s charge.. +1-1= Net charge of -0 which means it is balanced. Na+1 OH-1 NaOH Balanced