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Hydrate dissolving in it's own waters

  1. Apr 3, 2013 #1
    I remember a demonstration you can do when determining the waters of hydration of a perticular hydrate. As temperature increases, the compound actually becomes soluble in it's own waters of hydration and becomes a solution. As it is heated further, the waters of hydration are driven off.

    Anyone know what hydrate will do this?
  2. jcsd
  3. Apr 3, 2013 #2


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    Staff: Mentor

    Sodium thiosulfate pentahydrate and sodium sulfate decahydrate come to mind.
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