Chapter 9 Naming ACIDS Sodium chloride Hydrogen peroxide Magnesium sulphate Nitrogen dioxide Hydrochloric acid Calcium fluoride Carbon monoxide.

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Presentation transcript:

Chapter 9 Naming ACIDS Sodium chloride Hydrogen peroxide Magnesium sulphate Nitrogen dioxide Hydrochloric acid Calcium fluoride Carbon monoxide

Naming Acids

An ACID is a substance that when put into water, gives away a hydrogen ion (H +1 ) to another substance in the water solution. HCl + H 2 O HCl (aq) There are two types of acids: 1. Binary acids-HCl (aq) 2. Ternary acids-H 2 SO 4 (aq) -polyatomic ions (ending in ate) -polyatomic ions (ending in ite)

Naming Binary Acids EX: HCl (aq) 1. Use the prefix hydro for hydrogen 2. Anion ending changes from ide to ic 3. Add the word acid at the end. hydrochloric acid

Naming Ternary Acids Polyatomic ions ending in ate EX: H 2 SO 4 1. NO hydro prefix!!! 2. Anion ending changes from ATE to IC - Sulfate change to Sulfuric - Sulfate change to Sulfuric “IC I ATE that” “IC I ATE that” 3. Add the word acid at the end Sulfuric acid

Naming Ternary Acids Polyatomic ions ending in ite EX: H 2 SO 3 1. NO hydro prefix!!! 2. Anion ending changes from ITE to OUS -Sulfite change to Sulfurous -Sulfite change to Sulfurous “RITEOUS” “RITEOUS” 3. Add the word acid at the end Sulfurous acid

Practice Naming Acids 1.H 3 PO 4 - PO 4 = phosphate -Use saying “IC I ATE that” Answer= Phosphoric acid 2. HNO 2 -NO 2 = nitrite -Use saying “RITEOUS” Answer= Nitrous acid

Writing Acids

How to Write a Formula for an Acid: BINARY ACIDS Ex: hydrosulfuric acid 1. Write down symbols (H and S) 2. Determine Charges (H +1 S -2 ) 3. Cancel charges or use criss-cross method to form subscripts to cancel out charges to form subscripts to cancel out charges 4. H 2 S

Ternary ACIDS Ex: sulfuric acid 1. No hydro prefix so we have a polyatomic ion: In this case “IC I ATE that” In this case “IC I ATE that” sulfuric = sulfate (SO 4 ) -2 Can also be “RITEOUS” Can also be “RITEOUS” sulfurous = sulfite sulfurous = sulfite 2. Write down symbols (H and SO 4 ) 3. Determine Charges (H +1 SO 4 -2 ) 4. Cancel charges or use criss-cross method to form subscripts to cancel out charges to form subscripts to cancel out charges 5. H 2 SO 4