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Describe a laboratory experiment that can be used to show that the action of heat on hydrated cobalt (II) chloride is a reversible action.

Hydrated cobalt (II) chloride exists as pink crystals and anhydrous cobalt (II) chloride is a blue powder. Describe a laboratory experiment that can be used to show that the action of heat on hydrated cobalt (II) chloride is a reversible action.

Answers

Hydrated cobalt (II) chloride is heated in a boiling tube and the vapour produced condensed in a test-tube. Cobalt (II) chloride turns from pink to blue. When water is added back to anhydrous cobalt (II) chloride it turns back to pink.

raphael answered the question on January 31, 2017 at 12:35

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