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Hydrate Nomenclature. Chemistry 1K Notes Addendum. Naming Hydrates. 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.

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Hydrate nomenclature

Hydrate Nomenclature

Chemistry 1K Notes Addendum


Naming hydrates
Naming Hydrates

  • 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
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 carbonitedihydrate

VBr3 ● 4H2O

Sr(NO3)2 ● 5H2O

CaCO3 ● 3H2O


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