Water of Hydration Definition

Blue crystals of copper sulfate pentahydrate or copper sulphate.
These are blue crystals of copper sulfate pentahydrate, which is known as copper sulphate pentahydrate in the UK. Anne Helmenstine

Definition: Water of hydration is water that is stoichiometrically bound into a crystal.

Crystal salts containing water of hydration are called hydrates.

Also Known As: water of crystallization, crystallization water

Examples: Commercial root killers often contain copper sulfate pentahydrate (CuSO4·5H2O) cyrstals. The five water molecules are called water of hydration.

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Helmenstine, Anne Marie, Ph.D. "Water of Hydration Definition." ThoughtCo, Jun. 13, 2014, thoughtco.com/definition-of-water-of-hydration-605787. Helmenstine, Anne Marie, Ph.D. (2014, June 13). Water of Hydration Definition. Retrieved from https://www.thoughtco.com/definition-of-water-of-hydration-605787 Helmenstine, Anne Marie, Ph.D. "Water of Hydration Definition." ThoughtCo. https://www.thoughtco.com/definition-of-water-of-hydration-605787 (accessed May 22, 2018).