Use the talents you Use the talents you possess; for the woodspossess; for the woods

would be very silent if nowould be very silent if nobirds sang except birds sang except

the best.the best.

Naming CompoundsNaming Compounds

Lesson 5

NomenclatureNomenclature• A System of Naming Compounds• Compounds are two or more

atoms of different elements bonded together.

• Even though the gases O2, N2, F2, and Cl2 travel in pairs, their names are simply oxygen, nitrogen, fluorine, and chlorine.

Practice 1Practice 1• S2O2

• Disulfur dioxide

• Remember (Do not use mono if only 1 atom on first element)

Practice 2Practice 2• SO3

• Sulfur trioxide

• H2O

• Dihydrogen monoxide

AcidsAcids

• Compounds that give off hydrogen ions when dissolved in water.

• General formula HX.

Rules for naming AcidsRules for naming Acids

Rule 1Rule 1• When anion (X) ends with (ide).

Acid name begins with hydro change the ide to (ic), then follow by the word acid.

• Hydro ____ ic Acid

• Ex: HCl • Hydrochloric acid • [X = chloride]

Rule 2Rule 2• When anion ends in (ite), change

the stem of the anion with the suffix (ous) followed by the word acid.

• ite to ous

• Ex: H2SO3

• Sulferous acid

• [X = sulfite]

Rule 3Rule 3• If anion ends in (ate), the acid

name is the stem of the anion with the suffix (ic) followed by the word acid.

•ate to ic

• Ex: HNO3 • Nitric Acid• [ X = nitrate]

Practice 1Practice 1

• H2CO3

• Carbonic acid

• HNO2

• nitrous acid

Distillation Distillation

• Method of separating substances in a mixture by evaporation of a liquid and subcondensation of its vapor.

Example #1-Example #1-Names to Names to FormulasFormulas

HClO3

2. Add hydrogen ions

1. Determine the formula & charge of the polyatomic ion

Final Formula

chloric acid

(aq)

chlorate

-1+1

3. Balance charge with ions

4. Add the subscript: (aq)

=0

Examples #1- Examples #1- FormulasFormulas to to NamesNames

2. Determine the ion and it’s acid ending.

1. The hydrogen out front & the (aq) subscript indicates an acid

Final Name

HBrO2(aq)

bromous acid

bromite

____________ acid

Practice Problem #1Practice Problem #1HIO4(aq)

Choose the correct name for the compound

1. iodic acid

2. iodous acid

3. periodic acid

4. hydrogen periodate

5. none of the abovenext

problemIon list

Practice Problem #2Practice Problem #2hydrobromic acid

Choose the correct formula for the compound

1. HBrO(aq)

2. HBr(aq)

3. HBrO3(aq)

4. HBrO2(aq)

5. none of the above

next problem

Ion list

Practice Problem #3Practice Problem #3HBr (aq)

Choose the correct name for the compound

1. Bromic acid

2. Bromous acid

3. Hydrobromic acid

4. Hydrogen bromic

5. none of the abovenext

problemIon list