What do you observe when water droplets are added to anhydrous cobalt chloride
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Explanation: The reaction between anhydrous copper(II) sulfate and water is used as a test for water. The white solid turns blue in the presence of water. A similar reversible reaction takes place between anhydrous cobalt(II) chloride (which is blue) and water to produce hydrated cobalt(II) chloride (which is pink).
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