Hydrated Compoundsand Naming Acids

Hydrated compounds

• A hydrated compound is an ionic compound that contains water within its crystal structure

• This water can be driven off by heating the compound

• Ex. Copper(II) sulfate pentahydrate.• CuSO4·5H2O

Naming Acids

• An acid is an ionic compound, with Hydrogen as its cation, that has been dissolved in water (aq)

Naming Acids

Binary Acids:• The prefix “hydro” is used followed by the other

element, ending in “ic”

Examples:HCl hydrogen chloride hydrochloric acidH2S hydrogen sulphide hydrosulphuric acid

HBr hydrogen bromide hydrobromic acid

Naming Acids

Tertiary Acids (also called OXO acids)(H+ bonded to polyatomic ion)

• If the name of the anion ends in “ate”, the name of the acid ends in “ic”

Example:H3PO4 hydrogen phosphate phosphoric acid• If the name of the anion ends in “ite”, the name of the

acid ends in “ous”Example:HNO2 hydrogen nitrite nitrous acid

Naming Acids

Prefixes “per” and “hypo”

• Examples:HClO hydrogen hypochlorous hypochlorite acid

HClO4 hydrogen perchloric

perchlorate acid