Chemistry 1K Notes Addendum Hydrate Nomenclature Chemistry 1K Notes Addendum

Naming Hydrates To name a hydrate: Prefix Number Mono 1 Di 2 Tri 3 Tetra 4 Penta 5 Hexa 6 Hepta 7 Octa 8 Nona 9 Deca 10 Many solid compounds release water when heated at low temperatures. In these compounds, called hydrates, water molecules are loosely bonded within the solid crystal at regular intervals.  A common example of a hydrate is: CuSO4 •5H2O Where the compound is written first, followed by a dot (representing a weak bond) and then the number of water molecules that hydrate the compound To name a hydrate: Name the compound (according to the rules previously discussed) The choose the prefix in the table to the right that indicates the number of water molecules. Add the word “hydrate” to the end of the prefix. A common example of a hydrate is: CuSO4 •5H2O Copper(II) sulfate pentahydrate

Naming Hydrates Practice Name each hydrate: Li2SO4 ∙ 10H2O Pb(OH)4 ∙ 7H2O Cs2CO2 ∙ 2H2O Write the formula for each hydrate: vanadium (III) bromide tetrahydrate strontium nitrate pentahydrate calcium carbonate trihydrate lithium sulfate decahydrate lead (IV) hydroxide heptahydrate cesium carbonite dihydrate VBr3 ● 4H2O Sr(NO3)2 ● 5H2O CaCO3 ● 3H2O