Acids

Acids

• Acids are compounds that give off hydrogen ions, (H+) when dissolved in water. When a compound has hydrogen as its cation the substance is generally an acid – Examples: HCl, H2SO4, H3PO3

• The rules for naming acids are based on the anion portion of the acid formula.

Rules for Naming Acids

• The names of acids are based on the ending of the anion name.– Examples: HCl, H2SO4, H3PO3

Rules for Naming Acids

• The names of acids are based on the ending of the anion name.– Examples: HCl, H2SO4, H3PO3

• Cl‾ = chloride

Rules for Naming Acids

• The names of acids are based on the ending of the anion name.– Examples: HCl, H2SO4, H3PO3

• Cl‾ = chloride

• SO42‾ = sulfate

Rules for Naming Acids

• The names of acids are based on the ending of the anion name.– Examples: HCl, H2SO4, H3PO3

• Cl‾ = chloride

• SO42‾ = sulfate

• PO33‾ = phophite

Rules for Naming Acids

Anion ending Example Acid name Example

-ide Cl- (chloride) hydro-(stem)-ic acid hydrochloric acid

-ate SO42- (sulfate) (stem)-ic acid sulfuric acid

-ite PO33- (phosphite) (stem)-ous acid phosphorous acid

Name the acids

• HNO2

• HCN

• H3PO4

nitrous acid

hydrocyanic acid

phosphoric acid

Write formulas for the following acids

• chromic acid

• hydroiodic acid

• chlorous acid

H2CrO4

HI

HClO2

Homework

• Do the 4 “HOMEWORK” (Not example) problems on the Binary Molecular Compounds and Acids note page.– Do these problems on your own paper.– Homework will be collected tomorrow.